How do scientists determine the relative age of a rock or fossil

Answers

Answer 1

Answer:

they use carbon 14 which has a half life of 5730 years


Related Questions

functions of the kidneys​

Answers

Answer:

The kidneys are powerful chemical factories that perform the following functions:

1 . remove waste products from the body

2. remove drugs from the body

3. balance the body's fluids

4. release hormones that regulate blood pressure

5. produce an active form of vitamin D that promotes strong, healthy bones

6. control the production of red blood cells

What makes amino acids unique from one another

Answers

Answer:

An amino acid is an organic molecule that is made up of a basic amino group (−NH2), an acidic carboxyl group (−COOH), and an organic R group (or side chain) that is unique to each amino acid. ... Each molecule contains a central carbon (C) atom, called the α-carbon, to which both an amino and a carboxyl group are attached.

The R-groups are different and unique

The R group makes amino acids unique from one another. The correct option is C.

What are amino acids?

The R group, carboxylic acids, and amine groups are the building blocks of amino acids, which are tiny molecules. They serve as the foundation for proteins. The twenty different kinds of amino acids.

Amino acids are distinct because they contain three groups. It distinguishes itself from others due to its size, form, and membership in the R group. The R group gives the protein a distinctive shape that has a significant impact.

While the rest of the amino acid structure is the same across all types of amino acids, the R group varies. Therefore, the R group can be used to distinguish between amino acids.

Thus, the correct option is C. the R group.

To learn more about amino acids, refer to the link:

brainly.com/question/11843803

#SPJ2

The question is incomplete. Your most probably complete question is given below:

A. the amino group

B. the carboxyl group

C. the R group

D. the long strands of glucose molecules

What structure in the body does the bell jar represent?

Answers

The chest cavity. Hope this helped

Tell me how many chromosomes do you have?
//EZ question//

Answers

Answer:
23 pairs (46 total)

I need help with this please , I’ll mark you as a brainliest

Answers

If I eat candy then I will gain weight
If I shave my beard then it will grow back darker

With this you should be able to solve the rest :)

In your opinion, why is revision and change valuable in science/scientific study?

Answers

Answer:

it is important to change and revise so other people and yourself can learn from mistakes and move on.

Explanation:

please mark brainliest

20 points + brainliest to first correct answer! :))

Which outcome would most likely suggest that data collected is unreliable?

Other scientists conduct the same study but find different data.
The data is put on a scatterplot but does not show any trend.
Each data point is considered by many scientists to be accurate.
Many tools were used in the same laboratory to measure the data.

Answers

Each data point is considered by many scientists to be accurate. This is answer.

PLEASE MARK ME BRAINLIEST

I believe your answer is.. A.) Other scientists conduct the same study but find different data.

I hope this is correct and helps!

I need help with 5-10

Answers

Answer:

36.6 19.1 96.6 73.5 89.9 663

What do we call molecules that are only
made of hydrogen and carbon?

Answers

Answer:

Hydrocarbons

Hydrocarbons are organic molecules consisting entirely of carbon and hydrogen.

what is science???? explain​

Answers

Answer:

The term science comes from the Latin word "scientia" which means knowledge. But this statement is too broad in its everyday use. In a narrow sense, science is a discipline consisting of physical sciences (physic) and life sciences (biological sciences).

What’s the product of 3 2/3 and 14 2/5

Answers

Answer:

52.8

Explanation:

so make the mixed numbers into improper fractions.

which are 11/4 and 72/5. after that, multiply together by multiplying the numerator and denominator together.

I will give brainliest

Describe the appearance of the red blood cells in the 0.15 mol dm -3 salt solution and the red blood cells in the 0.20 mol dm -3 salt solution. ​​

Answers

Answer:

Red blood cells placed in a solution with a lower water concentration compared to their contents (eg 1.7 per cent salt solution) will lose water by osmosis and shrink. Water will diffuse from a higher water concentration inside the cell to a lower water concentration outside the cell

cell is placed in a hypertonic solution, water will leave the cell, and the cell will shrink. ... If placed in a hypotonic solution, a red blood cell will bloat up and may explode, while in a hypertonic solution, it will shrivel—making the cytoplasm dense and its contents concentrated—and may die.Red Blood Corpuscles) will swell if they are placed in a hypotonic solution. The cells will gain water by osmosis. The cells might burst and rupture if they are placed in hypotonic solution for a longer time.

please make me Brainlist

The information regarding the appearance of the red blood cells is described below:

The following information should be considered:

Red blood cells should be put in a solution with a less water concentration that should be compared to their contents (eg 1.7 per cent salt solution) will lose water via osmosis and shrink. Water should be diffuse from a higher water concentration inside the cell to a lower water concentration outside the cell

Learn more: https://brainly.com/question/20492533?referrer=searchResults


Describe the functioning of Golgi apparatus in animal cells.
Explain the role of lysosomes in animal cells.​

Answers

In the final stage of transport through the Golgi apparatus, modified proteins and lipids are sorted in the trans Golgi network and are packaged into vesicles at the trans face. These vesicles then deliver the molecules to their target destinations, such as lysosomes or the cell membrane.

which statement is true of the many parts if the biosphere

Answers

I believe the answe is B

1. Why are lysosomes important to health of cells?

A. They break down worn-out cell parts that are no longer needed.

2. Which of the following organelles provide structure and rigidity to a plant cell?

B. Cell wall

3. What would happen to a plant if the chloroplast in it's cells became damaged?

A. The plant would not make glucose and oxygen

4. A cell sends messages to itself via ______.

B. Autocrine signalling

5. Which activity produces an action potential in nerve cells?

D. exchange of irons

There all correct trust me T_T​

Answers

Answer:

so basically there is no question here, right?

Which type of lipid is one of the main structural components of all cell membranes?

A) Waxes
B) Oils
C) Phospholipids
D) Steroids

Answers

Answer:

C) Phospholipids.

Hope it helps you.

5. Forms which of these ?
PCI
compound
molecule

Answers

Answer:

Compound

Explanation:

Human beings are composed of progressively larger units of organization. Which unit of organization includes all the others?
cells
organs
systems
tissues
Previous
Type here to search
RE
DLL

Answers

Systems are the largest form of organization here. The smallest being cells, then tissues, then organs and finally systems

Answer:

organ systems include cells, organs, and tissues

16. Think about the path of light entering and travelling through
the eye and then this information is passed to the brain for
interpretation. Any of these parts may be damaged by injury or
infection. Write at least 3 examples of how you could become
blind following various types of injuries. ??

Answers

chemical exposure, lacerations, and hyphen as

When people run quickly, they can sweat profusely. Their muscles undergo movement, and the loss of energy takes place. Based on this description, in which two ways is energy conserved when people run?
Heat energy is released from the body to the surroundings.
Heat energy is taken from the surroundings to the body.
Chemical energy is converted to mechanical energy that’s used for muscle movements.
Radiant energy is converted to mechanical energy that’s used for muscle movements.
Heat energy is converted to mechanical energy that’s used for muscle movements.

Answers

Answer:

Heat energy is released from the body to the surroundings.

Heat energy is converted to mechanical energy that’s used for muscle movements

Explanation:

Heat energy is released from the body to the surroundings.

What terms did you put in the cytoplasm to show they belong to
both prokaryotes and eukaryotes?

Answers

Answer:

i think it is  The DNA will be replicated and condensed.

Explanation:

What protects the Earth from dangerous EM waves

Answers

Ozone layers protects the earth from dangerous EM waves

9. Why is a control group generally
very important in an experiment?

Answers

Answer:

Control is a group generall very important in an experiment because it allows you to eliminate and isolate these variables.

Please help!!

Eutrophication is an excess of
_____ often caused by run-off from lawns or
farms that wash excess fertilizer into rivers or coastal waters.

Answers

Answer:

Eutrophication is an excess of

plants and algal growth often caused by run-off from lawns or

farms that wash excess fertilizer into rivers or coastal waters.

plant.

An object's density is 15 g/cm^3 and its volume is 3 cm^3. What is its mass?​

Answers

Answer:

45g=0.045kg

Explanation:

ρ=m/V

so, m=ρV=15×3=45g=0.045kg

Hope, this helps you.

Answer:

It is 45 /cm^3

Explanation:

...

What is a pure substance?
A. Atoms that are all the same
B. Molecules that are identical
C. A and b
D. None of the above​

Answers

Answer:

option C is the correct

B



if yoy have notes…

What are some key chemical reactions that occur in your body?

Answers

The sum of all of the biochemical reactions in an organism is called metabolism. Metabolism includes catabolic reactions, which are energy-releasing (exothermic) reactions, as well as anabolic reactions, which are energy-absorbing (endothermic) reactions.

Answer:

metabolism is a chemical reaction in the body's cell the change food in to energy (answer would be Metabolism)

what is photosynthesis?
uyf-yntp-dka
come here fast...​

Answers

Answer:

photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.

Explanation:

BRAINLIEST IS APPRECIATED

A mutation to the p53 gene can cause what type of disease?

-Cancer since the delay in the cell cycle is disrupted.
-Nondisjunction causing an abnormal number of chromosomes.
-Cystic fibrosis due to a mutation in the gene that codes for a specific protein.
-Sickle cell causing abnormally shaped red blood cells.

Answers

Answer: A mutation to the p53 gene can cuase cancer since the delay in the cell cycle is disrupted.

A mutation to the p53 gene can cause this type of disease: Cancer since the delay in the cell cycle is disrupted.

A cell cycle is as an ordered sequence of events that takes place within a living cell as it grows and divide into two new daughter cells.

Cancer can be defined as the uncontrolled division of certain body cells, which then invade the surrounding tissues and interfere with the normal functioning of the body.

Some examples of cancer are:

Breast cancer.Prostrate cancer.Carcinoma.

A tumor can be defined as an abnormal mass of tissue formed when various body cells grow and divide more than its required or fail to when necessary (required).

Thus, it usually degenerate into cancerous growths (cancer).

In conclusion, it is caused by exposure to extremely dangerous radioactive substances such as gamma ray, uranium etc.

Read more: https://brainly.com/question/24152929

Distinguish between a prokaryotic cell and a eukaryotic cell by selecting the accurate statements that apply to eukaryotic cells. Check all that apply

Answers

Answer:

A prokaryotic cell is an under-developed cell which lack nuclear membrane whereas an eukaryotic cell is the well developed cell with nuclear membrane.

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You have read the short story Cheboygan Day by Brittany Allen. Select a scene and rewrite it from Adeles perspective. Which situation is likely to occur in a market economy?A. People refuse to trade with each other.B. The government owns all businesses.C. There are few obstacles to starting businesses. D. The government sets production quotas for goods. The width of a rectangle is 2w and the length is (w + 5). The perimeter is 40 inches. What are the measurements of the rectangle Multiple tests of the independent variable in an experiment (8 letter word) The following are all 5 quiz scores of a student in a statistics course. Each quiz was graded on a 10-point scale. Whats the message behind the picture, An illustration of immigrants on the steerage deck of an ocean steamer passing the Statue of Liberty? 8, 16, 48, 192, 960, It rained 12 days out of 30 days. Whichratio compares the number of rainy days tothe number of dry days? Where should there be a paragraph break in the following text? Explain yourself, Paul. The teacher demanded sternly. (1.) I am sorry. I know I should not have cheated on my math test. (2.) Last night I should have been studying, but we have a big game tonight. So I practiced my jump shots instead. So when you handed me the pop quiz I panicked. I know that doesnt justify what I did, but I made a mistake that will never happen again. I promise. (3.) So, please let me play tonight. (4.) Paul pleaded. State any THREE activities that took place during the forming stage Can somebody help me please #1 Matt has a square basketball court in his backyard that has an area of 196 ft. What is the side length of the basketball court?A) 14 feetB) 49 feetC) 56 feetD) 28 feet A car travels at a constant speed of 20m/s.Work out the distance travelled [in meters] by the car after (a) 4seconds (b) 12seconds (c) 3mins (d) 2hrs solve for x.. What are the coordinates of the point on the directed line segment from (4,10) to (-2, -2) that partitions the segment into a ratio of 3 to 1? HURRYYYY!!!! Find the volume of a rectangular prism that is 10 cm long, 3 cm wide, and 2 cm high. Please draw and label the prism Indicate the correct direct object pronoun to complete the sentence. Nuestro abuelo es un seor muy inteligente. Nosotros, sus nietos, ___ respetamos mucho. Why is migration important ? In the nucleus, _______ tell cells what to do and how to change. HELP PLS!!! You invested $25,000 in two accounts paying 7% and 8% annual interest, respectively. If the total interest earned for the year was $1900, how much was invested at each rate?