Need help with the question in the screenshots

Need Help With The Question In The Screenshots
Need Help With The Question In The Screenshots

Answers

Answer 1

17. F represents faults. 18. C represents sedimentary layer. 19. a is the youngest one. 20. B is oldest structure.

What is the history of rock?

Determine how rocks have evolved through time by reviewing geological maps and drawings, which is a common undertaking. Sedimentary rocks all begin as horizontal beds because sediments are deposited under the action of gravity in horizontal layers, as shown in the side view of the block model . The concept of original horizontality is what is meant by this. Because they have to be there initially for the others to deposit on top of them, the oldest rocks in a stack of sedimentary rocks will be at the bottom, and the layers becoming younger as they rise. The superposition principle refers to this. The relative ages of the rocks, or which are older and which are younger, can be determined by assigning a number to each in the order that it created, with 1 being the oldest.

 

To know more about Rocks visit:

https://brainly.com/question/19930528

#SPJ1


Related Questions

How do physical and environmental features affect human settlement?

Answers

Answer:

The physical and environmental can affect our ability and that of our families and neighbors to live long and healthy lives. Environmental features can create either livable or unlivable conditions which influence where humans decide to settle and why.

Which of the following chemical reactions removes CO2 from the atmosphere?



a.
CH2O + O2 -> CO2 + H2O

b.
CH4 + O2 -> CO2 + H2O

c.
CO2 + H2O -> CH2O + O2

d.
FeS2 + H2O -> FeO + H2S

Answers

Answer:

To control Earth’s mounting climate emissions, we really have our work cut out for us.

First, greenhouse gas emissions must be reduced to nearly zero by 2050 to prevent massive sea level rise, drought and heat waves. But that isn’t enough, since already-emitted carbon dioxide lingers in the atmosphere for millennia. To meet climate goals, this harmful gas must be removed from the air in a process called “negative emissions,” according to scientists at the virtual Comer Climate Conference this fall.

“There’s no scenario that keeps us under even 2 degrees [Celsius of warming] without negative emissions,” said physicist Raymond Pierrehumbert of the University of Oxford.

That is, no realistic scenario, he added.

“If you wave a magic wand” to erase CO2 emissions, that would prevent catastrophic warming, Pierrehumbert said in an email.

Though there’s no magic wand, the Earth does have a few defenses against changing climates. Some natural chemical reactions take carbon dioxide from the atmosphere and store it away. On their own, these methods take many thousands of years, but they would remove CO2 much more quickly if humans could accelerate them.

To succeed, though, the world must dramatically reduce emissions with green energy alternatives such as solar and wind. That way, the negative emissions techniques remove CO2 that’s already accumulated in the atmosphere.

Chemical reactions with rocks

If it weren’t for silicate weathering, Earth would be a hot, almost Venus-like hellscape. Carbon dioxide mixes with rain and causes the weathering, or breakdown, of rocks. This sets in motion chemical reactions that remove CO2 from the atmosphere and store it as minerals hidden away on the ocean floor.

This process has helped control Earth’s temperature throughout history.

“If it gets hotter, the silicate weathering goes faster, and it pulls CO2 out of the atmosphere. And if it cools down, silicate weathering slows down, so CO2 builds up,” said R.J. Graham, a doctoral student at the University of Oxford. “So it sort of acts as a thermostat for Earth’s climate.”

But now, human-forced climate change is warming Earth too quickly for it to be controlled by natural silicate weathering, which can take hundreds of thousands of years to work. To have a larger impact, Graham said we’d have to use enhanced weathering to speed up the process.

Some pieces of green olivine

A silicate rock called olivine is particularly good for removing CO2 through weathering. If people mined olivine, broke it into tiny pieces to increase its surface area and distributed it on land or in the oceans, it would get weathered at high rates and remove lots of CO2.

“[This idea] hasn’t really had as much attention paid to it as I think it deserves,” Graham said.

Enhanced weathering has the potential to lower atmospheric CO2 concentrations — which currently sit at the unsafe level of over 410 ppm — by 30 to 300 ppm by 2100, according to a report in Nature Climate Change.

A nonprofit called Project Vesta, unaffiliated with the Comer conference, hopes to create beaches with the ‘sand’ made of crushed olivine. Ocean waves will weather the rock quickly, and at scale, this could remove a lot of carbon dioxide from the air.

But it’ll take a lot of rock — to neutralize one year of carbon emissions, it takes a cube of olivine 6.34 miles on each side. Though it’s not as much as the coal mined each year, that cube would be taller than Mt. Everest, which is just under 5.5 miles high. And that’s not the only challenge.

“It’s an interesting concept, but it also might be dangerous, because you’re dumping a lot of rocks into the ocean that’ll have a lot of other trace metals and things that might screw with the biology in the oceans,” Graham said. “It’s something that needs to have a lot more research done.”

Silicate weathering does affect the oceans — it ultimately makes them more basic, or alkaline. Making the oceans more alkaline helps take CO2 out of the atmosphere, and other scientists are studying how to make that happen.

The big, blue carbon sink

Earth’s oceans help to slow climate change by absorbing carbon dioxide, but as they do, the water becomes more acidic. If compounds were added to the oceans to make them less acidic and more alkaline, the oceans would pull even more CO2 out of the air.

Some scientists explore ways this process called ocean alkalinity enhancement could remove CO2 from the atmosphere. Sophie Gill, a final-year Ph.D. student at the University of Oxford, wants to know what effect this has on marine life.

fossil fuels to renewable.”

Explanation:

The Andean Highlands from present day Colombia to present day central Chile is
historically analogous to
O Mesoamerica.
O the Greater Antilles.
O the Lesser Antilles.
O Baja California.
O None of these.

Answers

Anthropology, archaeology, ancient civilizations, social studies, sociology, storytelling, and world historyIn the region that is now known as central Mexico, the Aztecs established an empire in just a century.

Does Colombia fall under Central America?

It is generally accepted that all of the nations to the south of Mexico belong to Central America, along with Venezuela and Colombia, two nations in South America. Central American nations include the entirety of the Caribbean Sea.

What gives it its name, Mesoamerica?

Paul Kirchhoff, an anthropologist, coined the term "Mesoamerica" (meso is Greek for "middle" or "intermediate") in 1943 to describe these regions as having shared cultural characteristics prior to the European invasion. The term has remained.

Learn more about Central America here:

https://brainly.com/question/26336264

#SPJ1

Need help with the question in the screenshot

Answers

As series of events first layering of A, B, C, B, E and F occurred then due to tectonic forces it gets tilted and erosion occurred which erode upper part of the
rocks then deposition of G, H, I, J, K and L occurred which form a structure of angular unconformity. After these deposition faulting happend. After it
erosion occurred due to wind or water which create valley like structure as shown in figure of question 9

Next, think about the biomes that might exist in each climate zone. Research the types of animals and vegetation that are found in each biome. How do they relate to the economic activities in the area? How might the vegetation and wildlife impact the people who live there? Write two to three short paragraphs that summarize your conclusions.

note im doing italy!!

Answers

Answer: A climate zone results from the climate conditions of an area: its temperature, humidity, amount and type of precipitation, and the season. A climate zone is reflected in a region’s natural vegetation. Perceptive travelers can figure out which climate zone they are in by looking at the vegetation, even if the weather is unusual for the climate on that day.

The major factors that influence climate determine the different climate zones. In general, the same type of climate zone will be found at similar latitudes and in similar positions on nearly all continents, both in the Northern and Southern Hemispheres. The one exception to this pattern is the climate zones called the continental climates, which are not found at higher latitudes in the Southern Hemisphere. This is because the Southern Hemisphere land masses are not wide enough to produce a continental climate.

Explanation:

The least equipped oranisms may not survive true or false

Answers

Answer:

true

Explanation:

1
Question 1/12
X=
OV
y=
Find the measure of x and y (show all work):
(3x-3)°
> NEXT
(4y + 4)°/60°
BOOKMARK XQ

Answers

Answer:

4y=10

Explanation:

A on the map is the center of a high pressure system.
A on the map is the center of a low pressure system.

Which statement is true about the map ?

Answers

A excessive strain machine is a dense air mass that is typically cooler and drier than the surrounding air.

A low strain machine is a less dense air mass that is commonly wetter and hotter than the surrounding air. In general, areas that journey high atmospheric pressure also experience fair weather.

When a high strain middle is present at the floor we can expect?

Cities underneath the impact of excessive pressure facilities can anticipate commonly honest climate with little or no precipitation. In contrast, clouds and precipitation usually accompany a low pressure middle and winds glide counterclockwise around lows.

Learn more about high or low pressure on the map here:

https://brainly.com/question/11940010#SPJ13


Which statement is true regarding wellness?
A. It involves living to your fullest potential in eight dimensions of life
B. It only includes physical wellness.
C. It has the same definition as health.
D. It includes six dimensions that are interrelated.

Answers

the answer to this question is the letter C

What occurs at the beginning of the soil formation?

Answers

Life on Land Imposes Unique Constraints

Desiccation ­ when something that usually contains moisture is dried out completely ∙ This has been the biggest constraint imposed by terrestrial living environments Water Balance ­ when organisms must contain a balance of water between themselves and their surrounding environment

Answer:

the physical and chemical breakdown of the earth rocks

suggest and explain three negative environment impacts that may result from gold mining

Answers

Answer:

It can displace communities, contaminate drinking water, hurt workers, and destroy pristine environments. It pollutes water and land with mercury and cyanide, endangering the health of people and ecosystems.

Explanation:

Which theory do scientists believe MOST LIKELY explains the c
the universe?
OBig Bang Theory
O Geocentric Theory
O Heliocentric Theory

Answers

Answer:

Big Bang Theory. (it is accepted the most)

Explanation:

Big Bang Theory is the idea that the universe began as just a single point, then expanded and stretched to grow as large as it is right now. It is the simplest explanation for the origin of the universe which scientists claim is still expanding.

Big bang theory is most commonly accepted

Which of the following straits separate the Black and Mediterranean seas? (choose all that apply)

Group of answer choices


Bosporus Strait


Dardanelles Strait


Strait of Gibraltar


Strait of Sicily

Answers

Answer: strait of sicily

Explanation:

The straits that separate the Black and Mediterranean seas is the strait of Sicily. Thus, option fourth is correct.

What is strait?

A strait is an oceanic landform that connects two oceans or major bodies of water. Surface water flows at the same elevation on both sides of the strait and in either direction. It is most typically a small maritime corridor that connects two land masses.

The Black Sea is linked to the Mediterranean Sea by two small straits: the Bosporus Strait (Strait of Gallipoli), which links to the Sea of Marmara (Turkey), and the Dardanelles Strait (Strait of Gallipoli), which connects to the Aegean Sea. The Waterway of Sicily is the strait that connects the Black and Mediterranean seas. As a result, option four is correct.

Learn more about the strait here:

https://brainly.com/question/28230479

#SPJ2

PLEASE!! 50 points, What Latitude line goes through pennsylvania.

Answers

Pennsylvania, USA is located at latitude 41.203323 and longitude -77.194527. Pennsylvania, USA is located in the States place category in the United States country at 41° 12' 11.9628" N and 77° 11' 40.2972" W.

What are latitude and longitude?

A spherical or elliptical coordinate system known as the geographic coordinate system is used to measure and transmit positions on Earth as latitude and longitude.

Latitudes are horizontal lines that indicate how far away from the equator a location is. Longitudes are mutually perpendicular that represent the east and west directions relative to Greenwich, England's meridian. Cartographers, geographers, and others can pinpoint points or locations on the globe by combining latitude and longitude.

Learn more about latitudes and longitudes, from:

brainly.com/question/24460166

#SPJ1

Which type of map would be best to find out which states have the most people

Answers

I think I know the answe just send it to me and I’ll do it for you .

Lines of equal temperature that connect places on weather maps are called

Answers

Lines of equal temperature that connect places on weather maps are called Isotherms.

Maximum and minimum temperature maps don't have isotherms, but they have swaths of colours representing equal temperature areas.

These lines are drawn  on the map to show the equal distribution of temperature in a particular area.

Isotherms makes is easy to visualize the level of temperature changes per unit distance and in which direction. If they are very close to each other on the map than it means temperature changes rapidly in small distances. On the other hand, if isotherms are widely spaced than it means temperatures don’t change rapidly over small distances.

To know more about isotherms

https://brainly.com/question/4674503

#SPJ1

According to the following map of the Biosphere Reserves in Colombia, what can you say about the location of the biosphere reserves in the country?
- They are located where there are very few people.
- They are located in mountainous regions as well as lowlands.
- They are primarily located along rivers and estuaries.
- They are primarily located in the mountains of Colombia.

Answers

According to the map of the Biosphere Reserves in Colombia, the thing that you can  say about the location of the biosphere reserves in the country is option b: They are located in mountainous regions as well as lowlands.

What is Biosphere Reserves?

"Learning sites for sustainable development" are biosphere reserves. In addition to conflict resolution and biodiversity management, they serve as testing grounds for interdisciplinary approaches to understanding and controlling changes and interactions between social and ecological systems.

Note that The Macizo Colombiano, part of the Andean Chain in south Colombia, is where you'll find the Cinturón Andino Biosphere Reserve. The Nevado del Huila National Park, the Purace National Park, and the Cueva de los Guacharos National Park are its three National Parks.

Learn more about Biosphere Reserves from

https://brainly.com/question/2520160
#SPJ1

Using Area of a Circle to Find the Radiusand/or Diameter of Circle.The athletic department wants to paint the school's mascot logo onthe gymlocker room wall. They start by painting a solid blue circle onthe wall. What is the maximum diameter of the logo if only one quartof blue paint is used?H = Tr?1 quart ofblue paintcovers78.5 ft.

Answers

Answer:

Explanation:

The FitnessGram Pacer Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. Students begin at the starting line. Once the test begins, the running speed starts slowly, but gets faster each minute after you hear the signal (beep). A single lap (length of the basketball court), should be completed when you hear this signal (ding). The second time you fail to complete a lap before the sound, your test is over.

Fill in the blank to complete each statement. The land that supplies water to a river system is called a __ . Pollution from a single, identifiable source is called__ source pollution. Pollution that is difficult to link to a particular origin is called__ source pollution.

Answers

The land that supplies water to the river system is called a Watershed.

Pollution from a single, identifiable source is called point source pollution.

Pollution that is difficult to link to a particular origin is called non-point source pollution.

A watershed is a land area that channels rainfall and snowmelt to creeks, streams, and rivers, and eventually to outflow points such as reservoirs, bays, and the ocean.

Point source pollution is a single identifiable source of air, water, thermal, noise or light pollution.

Non-point source pollution is a kind of pollution that occurs when runoff from rain and snowmelt carries pollutants into waterways such as rivers, streams, lakes, wetlands, and even groundwater.

To know more about different types of Pollution:

https://brainly.com/question/15321514

Which European country still holds land in South America? Responses Ecuador Guyana Suriname French Guiana

Answers

French Guiana is a country still under a french colony. Its capital is cayenne.

the people living here are of mixed descent (metropolitan french, Haitians, Chinese, Brazilian, south Asians, etc.)

the official language of this country is French but several indigenous languages are also spoken such as Wayampi, Carib, emerillon.

French Guiana is governed by the provisions of the French constitution as a territorial collectivity of France and, as such, forms an integral part of the French Republic.

7. What are the names of the continents on Earth?

Answers

Europe
Asia
Africa
North America
South America
Antarctica
Australia

Weather can be defined as:



a.
The long term pattern of temperature or precipitation in a given region

b.
The short-term pattern of precipitation or temperature in a given region

c.
The long-term pattern of drought versus flooding in a given region

d.
The short-term pattern of wildfires in a given region

Answers

Answer:

Whether can be defined as

A.The long term pattern of temperature or precipitation in a given region

Russia cannot develop
its economy easily and
without causing great
problems. To what
extent do you agree with this statement

Answers

Answer: I do not fully agree with that statement, although it depends on the current status of Russia.

Explanation:

what is the population density of ankara

Answers

The population density of Ankara is 531 people per square mile which is equivalent to 205 people per square kilometer.  

The capital of Turkey, Ankara is covering a total of 9,468 square miles which is equivalent to 24,522 square kilometers. It is one of the largest cities in Turkey, second only to Istanbul, and has a calmer but more political environment.

Massive population growth occurred in Ankara in the 1950s when it was flooded by people who migrated for better jobs, better houses, and obviously, a better quality of life. The city still has a fast-growing population, which grew significantly yet again between 2014-2015.  

Learn to know more about population density on

https://brainly.com/question/16894337

Which of the following is an example of neocolonialism?


European countries control other people and their territories by appointing foreign government officials to rule the territory.

The United States provides foreign monetary aid to Asian countries in exchange for tariff-free ports for economic gain.

Wealthy world powers hold extensive influence over less powerful countries through economic and political strategies that increase revenue for the wealthy country.

Middle Eastern countries supply petroleum products to Indonesian countries at reduced cost for safe passage through the Malacca Strait

Two world powers agree to a non-invasion pact in sub-Saharan Africa to protect economic interests in mineral mines.

Answers

Wealthy world powers hold extensive influence over less powerful countries through economic and political strategies that increase revenue for the wealthy country. Therefore option C is correct.

What is Neocolonialism?

Neocolonialism has generally been interpreted as an extension of capitalism that enables capitalist powers (both states and businesses) to rule over subordinate nations indirectly through the activities of global capitalism.

The word "neocolonialism" was originally used in Jean-Paul Sartre's 1964 book Colonialism and Neocolonialism. The phrase has emerged as a key concept in African philosophy, particularly African political philosophy.

Sartre argued in the book for the rapid release of France's control over its former colonies as well as for complete freedom from the continuous influence of French policies on those territories, especially Algeria.

To know more about Neocolonialism follow the link.

https://brainly.com/question/11288414

#SPJ1

because of the cool air and the position of the andes mountains located to the east what can you tell me about the strip of land between the coast and the mountains

Answers

The cool air and the position of the Andes Mountains located to the East, show that the strip of land between the coast and the Mountains, receives little rainfall because it is on the leeward side of the Andes Mountains.

What is the leeward side of a mountain?

The leeward side of a mountain refers to the area that does not receive much rainfall because of the fact that it is in the rain shadow of the mountain. Think of it this way, winds that are warmer and full of moisture, come up the windward side of the mountains and as they ascend, they become colder and eventually fall as rain. When they reach the other side of the mountain (leeward) side, they have very little moisture left and are colder.

This is the case with the strip of land between the Andes Mountains and the coast in South America. As it is in the leeward side, it receives cold air and little rainfall which is why most of this strip of land is a desert that receives less than 0.6 inches of rain per year.

Find out more on the Andes mountains at https://brainly.com/question/1953840

#SPJ1

Explain the effect of energy crisis under
the following sub-heading.
. Agriculture
. Tourism
. Industries​

Answers

Agritourism presents a unique opportunity to combine aspects of the tourism and agriculture industries to provide a number of financial, educational, and social benefits to tourists, producers, and communities. Agritourism gives producers an opportunity to generate additional income and an avenue for direct marketing to consumers. It enhances the tourism industry by increasing the volume of visitors to an area and the length of their stay. Agritourism also provides communities with the potential to increase their local tax bases and new employment opportunities. Additionally, agritourism provides educational opportunities to the public, helps to preserve agricultural lands, and allows states to develop business enterprises. While agritourism may create new potential revenue streams, it also presents new legal issues for farmers and landowners.

4 Difference between erosion and denudation​

Answers

Answer:

erosion is the transport of soil and rocks from one location to another, and denudation is the sum of processes, including erosion, that result in the lowering of Earth's surface.

Explanation:

What
characteristics would you expect nonrenewable/sustainable energy sources to have?

Answers

Resources are characterised as renewable or nonrenewable; a renewable aid can fill up itself at the price it is used, while a nonrenewable resource has a confined supply.

Renewable assets include timber, wind, and solar while nonrenewable assets encompass coal and natural gas.

What are the 4 fundamental of non-renewable resources?

This ability that nonrenewable resources are constrained in furnish and cannot be used sustainably. There are four primary types of nonrenewable resources: oil, herbal gas, coal, and nuclear energy. Oil, natural gas, and coal are collectively called fossil fuels.

Learn more about resources here:

https://brainly.com/question/24514288#SPJ13

Your ASSIGNMENT
Fireflies make their own light. The light they give off looks green. The spectrum of their light is shown
Describe how you would use a tool to see the spectrum of a firefly's light. Explain what the spectrum
tells you about the light the firefly gives off. Include : comparison of the wavelengths of the light.

Answers

The method that fireflies produce light is comparable to how glowsticks do. We refer to this characteristic as bioluminescence when it takes place within a living thing.

What is the spectrum involved in Fireflies?

By providing oxygen to the other chemicals required to make light, a firefly can control the start and stop of the chemical process, and consequently, the start and stop of its light emission. The cause is chemiluminescence, a chemical reaction that results in light.

This occurs in the insect's light organ. When there is oxygen present, the light organ is activated; when there isn't, it is inactive. Since insects lack lungs, they use a complicated network of progressively smaller tubes called tracheoles to carry oxygen from the environment to their internal cells. Given the comparatively slow pace of the muscles that control oxygen transport, it has long been unclear how some firefly species accomplish such a high flash rate.

To learn more about fireflies , visit:

https://brainly.com/question/29336431

#SPJ1

Other Questions
the service recovery paradox shows that: a. when an organization recovers, it does not increase satisfaction. b. loyalty can increase as long as service-level performance is high. c. loyalty can increase even when service is low. d. when there is a service failure with effective recovery, loyalty can increase. Write wedding vows for Romeo and Juliet. Think about how they feel about each other and how they may represent this.Pls help A graphic which has a box in the middle that says Branches of U.S. Government. There are three boxes surrounding the middle box. Box one upper left hand corner contains the following: Legislative Branch, Facts followed by the letter A, Responsibilities followed by the letter B. Box two upper right hand corner contains the following: Letter C followed by the word Branch, Facts followed by the letter D, Responsibilities followed by the letter E and Leads the military. Box three below the middle box contains the following: Letter F followed by the word Branch, Facts followed by the letter G and Members serve for life, Responsibilities followed by the letter H. 2011 FLVSStudy the image above. Which of the following should you place on the line labeled "A"? "The NCAA is considering making the college football season longer but keeping the number of games the same. Teams would still play 12 games but in a span of 14 weeks. The extra weeks would make it easier for conferences to reschedule games in case of dangerous weather or other emergencies. A few weekends off during the season might also help athletes recover from injuries and complete their coursework. But starting training camp weeks earlier would be difficult for players who attend summer school or need to work in between semesters."List the cause(s) and effect(s) in the reading.cause: playing fewer football games over more weekseffect: both pros and cons for student athletescause: longer football seasoneffect: more scheduling flexibility, time for players to recover and study in the fall, less time for school and jobs in summercause: football interferes with athletes coursework and jobseffect: make the season longer so athletes have more time to work and studycause: weather and emergencies make it hard to reschedule football gameseffect: NCAA considering adding extra weeks to football season he unpredictability of exchange rate movements in the post-bretton woods era has lead to which two situations? You are holding a small helium balloon. Your friend says that the buoyant force from the atmosphere is greater on her car than your balloon. Is she correct? Explain your answer. 50 POINTS Which chemical formula most likely describes ozone?O A. OOB. 03OC. 0O D. 000 Activities that can help reduce the stress level in a family include __________. A. exercising B. reading C. going for a walk D. all of the above Please select the best answer from the choices provided. A B C D Mark this and return an investment company you are analyzing had a net asset value of $16.00 on january 1 of last year. on january 1 of this year, its nav was $17.50. during this period, you notice that the asked price declined by more than $2 per share. this investment company must be a(n): what is the name of the model associated with the view that giftedness is seen as the intersection of above-average intellectual ability, creativity, and task commitment? help asap thanks yall so much 9 + x/10 = 10 Solve for x Write a python code using tracy turtle to draw the following shape Peter and Wendy are co-owners of the Canadian firm, Tick Tock Airlines. Peter borrows money to build airplanes in Quebec. Wendy borrows money to build airplanes in England. How does this affect the market for loanable funds in Canada? (5 marks) a. Peter increases the demand for loanable funds. b. Wendy increases the demand for loanable funds. c. Peter increases the supply for loanable funds. d. Wendy increases the supply of loanable funds. a vessel contains 0.611 grams of butane gas (c4h10(g)) and molecules of oxygen gas. after the butane is reacted with the oxygen, how many molecules of co2(g) are formed and what is the theoretical yield of water? list in order the events of blood flow through the heart, starting from the blood entering the atria from the vena cava. A city doubles its size every 52 years. If the population is currently 637,100, what will thepopulation be in 208 years?people which of the following has a title in sentence case format? (choose all that apply) group of answer choices the challenges that heroes have overcome. the secret to successful time management. key factors that led to the uprising. all's good in love and war. Complete the notation configuration for Neon. consumers have the right to: group of answer choices receive refunds without sales receipts or other documentation complain if you have a problem with a product obtain free samples of products and services have unlimited warranties on all products