1 point
2. In July, a student tested the soil in two plots and calculated the
concentration of nitrogen compounds present in each plot. The student
then planted 20 seedlings in the first plot and allowed them to grow.
Nothing was planted in the second plot. The student tested the soil in both
plots again after one month. The concentration of nitrogen compounds
had decreased in the first plot but had remained the same in the second
plot. Which of the following best explains the decrease in nitrogen
compounds in the first plot? *
A. The nitrogen compounds had broken down into elements.
B. The nitrogen compounds were absorbed by the seedlings for their growth.
C. The nitrogen compounds escaped through air pockets created by the seedlings'
roots.
D. The nitrogen compounds had evaporated because of the warm summer
temperatures.

Answers

Answer 1

Answer: B. The nitrogen compounds were absorbed by seedlings for their growth.

Explanation:

Answer 2

For the plant to have energy accessible when and where it needs it to maximize yield, nitrogen is essential. As proteins and enzymes control water and nutrient intake, this important nutrient is even present in the roots. Thus, option B is correct.

What nitrogen compounds were absorbed by the seedlings?

Plants absorb ammonium and nitrate during the assimilation process, and these substances are then converted into organic molecules containing nitrogen, such as DNA and amino acids.

Plants may absorb substances from soils like nitrate, nitrite, ammonia, and ammonium, which are subsequently utilized to create proteins in both plants and animals.

Therefore, The nitrogen compounds were absorbed by the seedlings for their growth. After they reach three inches in height, seedlings should be fertilized; after that, they can get weekly fertilization until being transplanted.

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Related Questions

The diagram below shows two processes, P and Q, in the carbon cycle.



Which of these statements best describes the processes P and Q?

P shows diffusion and Q shows weathering.
P shows weathering and Q shows diffusion.
P represents combustion and Q represents decomposition.
P represents decomposition and Q represents combustion.

Answers

Answer:

P shows diffusion and Q shows weathering.

Explanation:

The process shown in the image attached to this question is a part of the carbon cycle. Based on the image in this question, atmospheric carbon enters the ocean in a process called P while carbon deposited in limestone is released into the atmosphere via a process called Q.

- Atmospheric carbon which is carbon dioxide (CO2) enters the surface of the ocean via a process called DIFFUSION, hence, process P shows diffusion

- Also, for the carbon in limestone to be released into the atmosphere, the limestone has to be broken down in a process called WEATHERING. Hence, process Q shows weathering.

bro like can someone actually help please

Answers

Oh, it's easy. Basically, this is all you need to know:

C matches with G, and A matches with T.

So wherever you see a C, write "G."

Wherever you see a G, write "C."

Wherever you see an A, write "T."

Wherever you see a T, write "A."

in pea plants, purple are dominant to white.
complete the chart showing the genotypes and phenotypes possible.

someone help me i’m kinda lost on how i do this

Answers

Answer:

PP (genotype) - Purple (Phenotype)

Pp (Genotype - Purple (Phenotype)

pp (Genotype) - White (Phenotype)

Explanation:

The genotype allele combinations, in order to for purple to be dominant there are three possible genotypes

*Capital P represents a purple dominant allele

*Lowercase p represents a white recessive allele

(Alleles are the variants of a certain gene, ex: brown eyes, green eyes, etc. )

A Dominant always overpowers the recessive, the only way for a recessive to show would be to have two recessive alleles from both parents

ex: Green eyes recessive to Brown

B - Brown       bb = green eyes (from dad)  

b - green       bb = green eyes (from mom)  

this means that their child would have green eyes because there is no brown present

So for your pea plants to be purple

Pp = Purple      pp = white

PP = Purple    (yes there can be white recessive present, it just might not appear as a plant because of the percent of purple)

The colors or observations we see as the plant are the phenotypes

so the colors I have listed would be the phenotypes

Don't get alleles and phenotypes confused, alleles are the various forms of a gene, and phenotypes are what we see when the gene is brought through.

Which is of the following is necessary for natural selection? 1. There must be a shortage of food 2. There must be a change in the environment, causing individuals to change 3. There must be some genetic differences among the individuals of a species 4. all of the above

Answers

Answer:

It's 3!

Explanation:

There must be genetic differences so the best fitted organisms will survive. If they were all the same then no one would be best fitted and Natural Selection wouldn't be able to occur

It's not 1 because a food shortage isn't required, there's always competition for food sources

It's not 2 because there doesn't need to be a change in the environment for natural selection, just for evolution.

And it can't be 4 if 1 and 2 are wrong!

Hope this helped!

Give an example of how biotechnology might be used to cure disease.

Answers

Answer:

Biotechnologies may be used to study the genetic material of viruses and bacteria to determine whether a disease is caused by particular disease-producing agents. Its techniques are also used to understand how genetic factors contribute to human disease.

Explanation:

Answer:

These products help treat and prevent diseases. From the Ebola vaccine to mapping human DNA to agricultural impacts, medial biotechnology is making huge advancements and helping millions of people. Some of the most recent uses of biological tech is work in genetic testing, drug treatments, and artificial tissue growth.

Explanation:

2. Which statement does not accurately describe natural selection?
A. Individual organisms change their genes to adapt to their environment.
B. The genetic composition of a population changes from one generation to the next.
C. More advantageous traits become more common in populations.
D. Beneficial and useful traits are inheritable.

Answers

Answer:

It is individual organisms change their genes to adapt to their environment.

correct answer is A

describa la evolución de los seres humanos a partir de los primates iniciales. incluye en su análisis características como la visión binocular, las manos que sostenían los objetos, la locomoción bípeda, la vida social, la fabricación de herramientas y el aumento del tamaño del cerebro​

Answers

No se la respuesta talbes pon una foto para que sea más fácil

aquí todos hablan inglés tienes que poner donde dise la materia en spanish/español

dna replication

aaccagaccca
ttggtctgggt

Answers

Answer: dna replication happens in interphase before the mitosis

Explanation: During interphase the cell’s DNA inside the nucleus replicates forming two strands of DNA or chromosomes. In the interphase the DNA replicates in the S phase. Don’t confuse with G1 since in G1, which comes before S phase, replicates the cellular contents needed for this process

Can you please help me

Answers

Answer: the last one

Explanation: yuh

Answer:

i think the last one would be the right answer

_________ is a mitochondrial disorder.​

Answers

Answer:

cell malfunction

hope this helps you ☺️☺️

Cell malfunction.








It’s true

Why do we exhale more carbon dioxide than we inhale?

Answers

Answer:

When we exhale, we breathe out less oxygen but more carbon dioxide than we inhale. The carbon we breathe out as carbon dioxide comes from the carbon in the food we eat. The carbon dioxide is dissolved in the blood, carried to the lungs by the circulation, and breathed out.

Answer:

because our bodies take in O and put out  CO2

Explanation:

O is Oxygen

and CO2 is Carbon dioxide

why do large organisms require a transport system?​

Answers

Answer:

Larger animals have a lower surface area to volume ratio. This means they need transport systems like our circulatory system and exchange surfaces like our lungs or fish gills. In single-celled organisms such as protists, and small multicellular organisms, essential molecules will move to where they're needed by diffusion.

Explanation:

Answer:

As the size of an organism increases, its surface area to volume ratio decreases. ... Large multicellular organisms therefore cannot rely on diffusion alone to supply their cells with substances such as food and oxygen and to remove waste products. Large multicellular organisms require specialised transport systems.

Explanation:

how most of our excretory system is not dedicated to excreting; it’s dedicated to reabsorbing.

Answers

Answer:

Not all animals use the same routes or excrete their wastes the same way humans do. Excretion applies to metabolic waste products that cross a plasma membrane.

The excretory system works with the respiratory, endocrine, urinary and digestive system. It works with the respiratory system because it helps the lungs get rid of carbon dioxide and water vapors. It works with the digestive system to help get rid of wastes that you eat through the anus.

What percentage of the moon as seen from Earth is illuminated during the third quarter phase?

Answers

Answer:

50% of the moon is illuminated during a third quarter phase

Answer:

50% I hope this answers question

If you dissected an owl pellet and found several of the skulls shown, what would you conclude is the preferred prey of this owl?

bat
gopher
mouse
shrew

Answers

Answer:

The answer is C. mouse

Explanation:

Answer:

it is c or mouse

Explanation:

Im a well developed paragraph, give a concrete examples that illustrate why the United States should regulate trade.

Answers

I don’t think anyone is doing this

15
Select the correct answer.
Which of the blood reagent tests result in a blue-green color when it touches blood?
OA Phenolphthalein
O B. Luminol
OC. Fluoresceln
OD HemaStix
Reset Next​

Answers

Answer:

The correct answer is - D. Hemastix

Explanation:

HemaStix is a blood reagent test to test the blood present in a sample with the help of strips of tetramethylbenzidine and hydrogen peroxide. It is a presumptive color test. A presumptive color test that detects blood.

In this test, the plastic pad of TMB and hydrogen peroxide gets a sample from a wet swab, initially, it gives yellow color but if there is blood and it touches with blood it will turn green or blue-green. It does not require to destroy the DNA of the blood cells.

Lilly and her lab partner, Alberto are investigating factors that influence the rate of photosynthesis. They know that any change to the reactants in photosynthesis could have an effect on the production of glucose and oxygen. In doing some research, the pair comes across the data shown above. They decide to brainstorm possible variables they could change in their experiment that could increase the rate of photosynthesis. Evaluate their list of possibilities. Based on the data and your knowledge of photosynthesis, what would you advise Lilly and Alberto to consider changing in their experiment if they wanted to increase the rate of photosynthesis? Choose ALL that apply.

Answers

Answer:

A and B

Explanation:

The correct answers would be A, B, and E. Hope this helped. Have a nice day :D

What are the spikes on my potatoes? I have had them on my counter for a min and it looks like they are turning into mutants

Answers

prob potato spores! cut them off

When there is no pattern to a
population's growth, it is known as
A. irregular
B. stable
C. irruptive
D. cyclical

Answers

B. because irruptive is when the growth goes up and cyclical is when the growth continuously keeps changing

When there is no pattern to a population's growth, it is known as stable. The correct option is B.

What is population growth?

The rise in the number of people on Earth is referred to as population growth. The majority of human history saw a relatively steady population size. Energy, food, water, and medical care, however, became more accessible and dependable as a result of innovation and industrialisation.

The predicted population expansion is due in part to factors like an increase in young, unmarried mothers, high fertility rates for specific ethnic groups, and a lack of access to contraception and sexual education.

When age-specific fertility and mortality rates are constant over a long period of time, there is a stable population growth.

Contrarily, an irregular population increase is one in which there is no structure and the population size behaves chaotically.

Thus, the correct option is B.

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What is the volume of a square pyramid with a base edge of 14 m and a slant height of 25 m

Answers

Answer:

length of base(l) = 14m

slant height (s)=25m

we know,

slant height(s)=√(l/2)^2 + h^2

or, 25= √(14/2)^2+ h^2

or, 25 = √49+h^2

or, 25^2 = 49+h^2

or, 625 = 49 + h^2

or, 625-49=h^2

or, √576 =h

h=24

Therefore vertical height (h)= 24m

Again,

Volume of square pyramid (v) = 1/3 L^2h

or, v =( 1/3) 14^2×24

or, v= 4704 / 3

Therefore, V= 1568 cubic meter.

how is electricity generated in Minnesota recently?

Answers

Answer:

Almost all the rest of Minnesota's electricity generation comes from wind, which supplied 19% of the state's electricity net generation in 2019, and natural gas, which fueled 18%. Smaller amounts of electricity are generated from solar energy, biomass, and conventional hydropower.

Explanation: Hope this Helps:)

What do the circles represent

Answers

Answer:

nothingkekwowkwo

Explanation:

nothingsjejskskwko

Don’t knowaguabwgwuebevbw

If you cross an AAbb individual with an aabb individual, what will the genotype ratio be in the next generation? What will be the phenotype ratio?

Answers

Answer:

Genotype of offspring = Aabb

Genotype ratio will be 100 % as all the offspring will have the same genotype

Phenotypic ratio = 100% all the offspring will have the same phenotype

Explanation:

Genotype of First parent - AAbb

Genotype of Second Parent - aabb

Gamete of first parent - Ab, Ab, Ab, Ab

Gamete of second parent - ab, ab, ab, ab

All the offspring will have genotype Aabb

Phenotypic ratio = 100% all the offspring will have the same phenotype

⦁ Arrange these statements in the right order to describe process of inhalation.

____ Air is drawn into the lungs
____ Air pressure in the chest cavity decreases
____ Lungs expand
____ The diaphragm contracts and flattens
____ The muscles between the ribs contract to move the ribs up and out

Answers

Answer:

air is drawn into the lungs

lungs expand

the muscles between the ribs contract to move the ribs up and down

air pressure in the chest cavity decreases

the diaphragm contracts and flattens

Inhalation has been part of respiration. It includes drawing air into the lungs that expand the lung cavity by pulling the ribs leading to contracting the diaphragm followed by a decrease in lung pressure. Thus the correct order is 1, 3, 5, 4, and 2.

What is inhalation?

Inhalation is the respiratory process to inhale oxygen inside the respiratory system for the cellular and respiratory processes. At first, the air is drawn into the lungs followed by expansion of the lungs.

This causes the ribs muscles to move up and down to accumulate the volume. This movement causes the diaphragm to flatten and contract which allows the oxygen to take place in the lungs that decreasing the air pressure in the cavity.

Therefore, the air is drawn inside the lungs in inhalation.

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Why is it important for the aorta be to be as wide as it is?

Answers

Answer: It distributes oxygenated blood to the different tissues, it has to be wide enough to fit everything through as efficiently as it can.

essentially its like a tunnel and tunnels have to be wide to fit everything through

Answer:

Aorta is a major vessel that distributes oxygenated blood to the different tissues in the circulatory system. It is also the largest known blood vessel in humans

Explanation:

(b) Identify the dependent variable in the experiments. Identify a control group missing from the second experiment. Justify the need for this control group in the second experiment.

Answers

Hello. You have not submitted the experiments to which this question refers, which makes it impossible for it to be answered. However, I will try to help you in the best possible way.

A dependent variable is one that is influenced by an element, in order to present a result, that is, it is a variable that does not establish itself, being dependent on another variable to establish itself. An example of a dependent variable can be seen in an experiment that seeks to determine the differences in growth rates of bean plants that were fertilized with different organic fertilizers. As you can see, this is an experiment where the different organic fertilizers influence differences in the growth rate of bean plants. Thus, the growth of these plants depends on the fertilizer, this growth being the variable dependent on the experiment.

A control group, in turn, is an element of the experiment that does not receive the element that is being tested in the same experiment. The control group is important, because it allows the researcher to see the results of a system where the tested element does not exist, thus being able to determine the real differences that the tested element is capable of causing. Using the same example presented in the paragraph above, we can see that the different organic fertilizers are the elements tested in the experiment. These fertilizers will be applied to the plants, however it is important that at least one of these plants does not receive any fertilizer, so that the difference between a system with fertilizer and a system without fertilizer can be evaluated. This plant that received no fertilizer is the control group.

1. Explain the contributions of Nicholaus Steno to geology.

Answers

Despite a relatively brief scientific career, Nicholas Steno's work on the formation of rock layers and the fossils they contain was crucial to the development of modern geology. The principles he stated continue to be used today by geologists and paleontologists. ... Steno dissected it and published his findings in 1667.

A(n)\ is a system composed of living organisms and their interaction with the surrounding environment, where the main focus is the interaction and relationship between species .
1.habitat
2.biome
3.environemnt
4.ecosystem

Answers

Answer:

The correct answer is 4.ecosystem.

Explanation:

An ecosystem is a system, that is, a set of elements that interact with each other, in which such elements are: physical environment, living beings and their interactions (predator-prey, parasite-host, competition, symbiosis, pollination, distribution of seeds , etc.) The interrelation between living beings (competition, parasitism, etc.) occurs through cycles of matter and energy flows on which the functioning of the entire ecosystem depends.

A behavioral or physical adaptation is something ___
helps a species survive
makes a species prettier to look at
makes a species become extinct
prevents a species from surviving

Answers

Answer:

Explanation:

The answer is

helps a species survive

Answer:

helps a species survive

Explanation:

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