Answer:
The first one
Explanation:
The two algae seen here are classified as green algae. That means they make their own food by photosynthesis. The algae on the left is one-celled, or unicellular. The algae on the right is many-celled, or multicellular.
How are these two types of algae different?
Question 5 options:
Only the the multicellular algae contains a chloroplast.
They are different only in how many cells make up each algae.
Only the multicellular algae has chlorophyll for photosynthesis.
The multicellular algae cel has many more parts than the unicellular algae.
Answer:
C
Explanation:
Unicellular algae can't do photosynthesis because it is a single cell organisms, therefore the answer is C
Answer:
C
Explanation:
Plzz help mee asapp dmxkxksms
Answer:
1. a part of the soil that contains decayed plant or animal matter
2. erosion
3. topsoil
Explanation:
Hope this helped :)
Which of the following arrangements of the visible colors of light is in the correct order of increasing energy?
Group of answer choices
red, orange, yellow, green, blue, indigo, violet
violet, indigo, blue, green, yellow, orange, red
red, yellow, orange, green, blue, indigo, violet
violet, indigo, green, blue, yellow, orange, red
can someone help me with this
Answer:
I think cold front if not than its c
40 POINTS PUT A GOOD ANSWER
What role do animals have in the carbon cycle?
Group of answer choices
use water and release oxygen
use sugar and release carbon
use carbon and release oxygen
use carbon and release nitrogen
Since the 1800s, fossil fuels have been used to meet the energy needs of many human activities.
Select TWO statements that describe what the scientists will observe in the ecosystem after fossil fuels have been extracted and burned.
Group of answer choices
There is more available space for carbon to become fossil fuels.
There is less carbon in storage.
There will be less carbon in the water.
There is more carbon in the atmosphere.
There will be more carbon respired by organisms.
There will be less carbon released through decomposition.
Answer:
B What role do animals have in the carbon cycle?
Group of answer choices
use water and release oxygen
use sugar and release carbon
use carbon and release oxygen
use carbon and release nitrogen
D, E Select TWO statements that describe what the scientists will observe in the ecosystem after fossil fuels have been extracted and burned.
Group of answer choices
There is more available space for carbon to become fossil fuels.
There is less carbon in storage.
There will be less carbon in the water.
There is more carbon in the atmosphere.
There will be more carbon respired by organisms.
There will be less carbon released through decomposition.
Explanation:
Animals obtain energy through sugar from the food they eat and release carbon into the air through respiration. Therefore, they partake in the carbon cycle by using sugar and releasing energy.
As far as the second question, when fossil fuels are burned, the carbon contained within them is released into the atmosphere in the form of carbon dioxide. So, there will obviously be a greater amount in the atmosphere.
I would like to apologise in advance if either of my option choices were incorrect.
If two organisms are classified in different orders but are in the same class, which of these statements is true?
The group of statements are given below that are required to answer the question:
The organisms have the same genus.
The organisms are in the same phylum.
The organisms are in different kingdoms.
The organisms are members of the same species.
Answer:
The correct answer is: The organisms are in the same phylum
Explanation:
The Phylum is the classification rank or rank in the hierarchy which includes the organism of the same classes but different orders which means the organisms of phylum show the difference on order level.
Species and genus are the least inclusive ranks the which means they have fewer organisms and come on a lower level of the hierarchy or classification ranks.
Thus, the correct answer is - option - The organisms are in the same phylum
what is an advantage of power plants powered by natural gas when compared to coal and oil
Which pair of elements has the most physical and chemical properties in common?
Ge and Se
K and Kr
Al and Ga
Ba and Bi
The elements have the most physical and chemical properties in common are aluminum and gallium. Therefore, option C is correct.
What are chemical properties ?A chemical property is any of a material's features that becomes obvious during, or after, a chemical reaction; that is, any quality that can be proven only by changing a substance's chemical identity.
The physical and chemical characteristics of elements that are found in the same group on the periodic table are comparable. These elements also share the same number of valence electrons. As a result, the physical and chemical properties of elements belonging to the same group are comparable.
Color, density, hardness, and melting and boiling points are examples of physical qualities. The capacity of a substance to go through a particular chemical transition is described by its chemical property. We search for a chemical change to locate a chemical attribute.
Thus, option C is correct.
To learn more about chemical properties, follow the link;
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Is it true that changes that occur to Earth's landforms are never man-made.
Describe the chemical reaction based on the chemical equation below. Also, explain whether the equation is balanced.
Answer:
edg 2020
Explanation:
Ammonia gas reacts with oxygen gas.
Nitric oxide gas and liquid water are produced.
Platinum is used as a catalyst.
The equation is unbalanced because the number of hydrogen atoms is not the same on both sides of the equation.
Answer:
Ammonia gas reacts with oxygen gas.
Nitric oxide gas and liquid water are produced.
Platinum is used as a catalyst.
The equation is unbalanced because the number of hydrogen atoms is not the same on both sides of the equation.
Explanation:
For edge:)
H-S-H
o bent
O linear
tetrahedral
Answer:B or bent
Explanation: It's asking to Use the Lewis structure to predict the molecular geometry of each molecule. and the question is H-H-S-H with two dots above and below the S only. I know this because this is a question on Edge 2022.
Which ion is common to all alkalis
what is the epicenter?
Answer:
basically the middle of an earthquake
Answer:
the point surface of the Earth where the first vibration is create is known as epicenter.
Explanation:
the point on the earth's surface vertically above the focus of an earthquake.
An element is a solid at room temperature, has luster, is conductive and malleable. During experimentation, it is found to have various ionic forms sometimes possessing a 2+ charge and others a 3+ charge. This element is most likely found in which area of the periodic table?
Answer: transition metals
Explanation:
can DDT only be synthesized one way?
Answer:
DDT (dichloro-diphenyl-trichloroethane) was developed as the first of the modern synthetic insecticides in the 1940s. It was initially used with great effect to combat malaria, typhus, and the other insect-borne human diseases among both military and civilian populations. It also was effective for insect control in crop and livestock production, institutions, homes, and gardens. DDT's quick success as a pesticide and broad use in the United States and other countries led to the development of resistance by many insect pest species.
Regulation Due to Health and Environmental Effects
The U.S. Department of Agriculture, the federal agency with responsibility for regulating pesticides before the formation of the U.S. Environmental Protection Agency in 1970, began regulatory actions in the late 1950s and 1960s to prohibit many of DDT's uses because of mounting evidence of the pesticide's declining benefits and environmental and toxicological effects. The publication in 1962 of Rachel Carson's Silent Spring stimulated widespread public concern over the dangers of improper pesticide use and the need for better pesticide controls.
In 1972, EPA issued a cancellation order for DDT based on its adverse environmental effects, such as those to wildlife, as well as its potential human health risks. Since then, studies have continued, and a relationship between DDT exposure and reproductive effects in humans is suspected, based on studies in animals. In addition, some animals exposed to DDT in studies developed liver tumors. As a result, today, DDT is classified as a probable human carcinogen by U.S. and international authorities.
DDT is:
known to be very persistent in the environment,
will accumulate in fatty tissues, and
can travel long distances in the upper atmosphere.
After the use of DDT was discontinued in the United States, its concentration in the environment and animals has decreased, but because of its persistence, residues of concern from historical use still remain.
Current Status
Since 1996, EPA has been participating in international negotiations to control the use of DDT and other persistent organic pollutants used around the world. Under the auspices of the United Nations Environment Programme, countries joined together and negotiated a treaty to enact global bans or restrictions on persistent organic pollutants (POPs), a group that includes DDT. This treaty is known as the Stockholm Convention on POPs. The Convention includes a limited exemption for the use of DDT to control mosquitoes that transmit the microbe that causes malaria - a disease that still kills millions of people worldwide.
In September 2006, the World Health Organization (WHO) declared its support for the indoor use of DDT in African countries where malaria remains a major health problem, citing that benefits of the pesticide outweigh the health and environmental risks. The WHO position is consistent with the Stockholm Convention on POPs, which bans DDT for all uses except for malaria control.
DDT is one of 12 pesticides recommended by the WHO for indoor residual spray programs. It is up to individual countries to decide whether or not to use DDT. EPA works with other agencies and countries to advise them on how DDT programs are developed and monitored, with the goal that DDT be used only within the context of programs referred to as Integrated Vector Management. EXIT IVM is a decison-making process for use of resources to yield the best possible results in vector control, and that it be kept out of agricultural sectors.
Explanation:
hope this helps
What element melts at -157°c
Answer:
Krypton
Explanation:
The arrows on field lines show the direction of force in an
electric field.
Which statement best describes how the arrows are shown?
A. Arrows point away from the negative charge and toward the
positive charge.
O B. Arrows point toward both charges.
C. Arrows point away from both charges.
D. Arrows point away from the positive charge and toward the
negative charge.
SUBMIT
Answer:
D
Explanation:
Because, it is lol
Question 14
Which of the following is a list of physical properties?
А
color, state of matter, density
B
temperature change when a substance is added, flammability, color
с
density, conductivity, reacts with acid
D
color, size, combustability
Answer:
The answer is A.
Explanation:
Physical properties include: appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity, and many others.
A car moving at 12 m/s applies its brakes and comes to a stop in 2 s. What was its acceleration?
Answer:
6 m/s²Explanation:
The acceleration of an object given it's velocity and time taken can be found by using the formula
[tex]a = \frac{v}{t} \\ [/tex]
where
a is the acceleration
v is the velocity
t is the time
From the question we have
[tex]a = \frac{12}{2} \\ [/tex]
We have the final answer as
6 m/s²Hope this helps you
Which forces can be classified as intramolecular?
London dispersion forces
van der Waals forces
hydrogen bonds
covalent bonds
Answer:
D) Covalent Bonds
Explanation:
Quizlet says so
Among the given options the intramolecular force is covalent bonding. Covalent bond is formed between two nonmetals by sharing of electrons. All other given forces are intermolecular.
What is covalent bonding ?A covalent bond is formed between two non-metals through sharing of valence electrons between atoms. For example carbon and oxygen are non metals forming the covalent compound CO.
The number of shared pair of electron depends on the valence of each atoms. For example in HCl, both atoms shares one electron to each other.
In a covalent compound, if the difference in electronegativity between two atoms is significant, the shared pair of electrons attracts towards the highly electronegative atom and resulting charge separation make them polar compounds.
Find more on covalent compounds:
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i need help with this
Answer: B
Explanation: Most of the time they form over oceans which bring cool and moist weather.
Describe what happens when ice changes
into liquid water.
Answer:
When ice changes into liquid water it melts. The solidified ice in the frozen, would melt via the burning sun shooting its streaks down at the ice. Which causes the ice to melt, and turn into liquid water.
Explanation:
pp poopoo
plz am in need of thise what is a catalyst
Answer: Catalyst - A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
Explanation:
what is 3.8 times 3.8
Answer:
14.44
Explanation:
Answer:
14.44
Explanation:
If you take a pencil and do the math on paper you will get 14.44 :)
convert the chemical formula NA(NO2) into a chemical name
Answer:
sodium nitrite..
Explanation:
Answer:
Sodium nitrite is an inorganic compound with the chemical formula NaNO2. It is a white to slightly yellowish crystalline powder that is very soluble in water and is hygroscopic
Definition: An inorganic sodium salt having nitr...
ChEBI Name: sodium nitrite
Explanation:
equation for the oxidation of octane.
Answer:
I think its 2 C8H18 + 25 O2 = 18 H2O + 16 CO2
Im not sure!
Explanation:
Can you use volume alone to predict whether an object will sink or float? Explain.
Answer:
The answer is: No
Explanation:
Density determines if an object will sink or float, not volume.
Volume is the quantity of three-dimensional space enclosed by a closed surface.
which organ has cells that produce pepsin which break down protein
Answer:
stomach
Explanation:
Which of the following statements is true? Fusion breaks apart nuclei; fission puts them together. Fission breaks apart nuclei; fusion puts them together. Fission and fusion have identical reactions.
Answers:
Fission breaks apart nuclei
Fusion puts them together.
======================================================
Explanation:
The term "fission" is related to the term "fissure" which means "a cut or divide", often describing a geologic feature of the earth (eg: a crack in the rock).
Fusion is the idea of putting things together, which is the opposite of fission. The term doesn't have to apply to nuclear fusion. It could be something like the fusing of two ideas to create one new idea.
Answer:
the 2nd one
Explanation:
Please help I will give brainiest
Answer:
i agree with imj, smaller computers have smaller batteries, but i also think that circut boards is the true answer, circut boards run the computer but batteries power it i think its *Circut Board*
