Why is it that nitrogen is often a limiting plant nutrient, despite the fact that the atmosphere is 80% nitrogen gas (N2)

Answers

Answer 1

Nitrogen is a limiting plant nutrient because the bulk of the available nitrogen in the atmosphere is not usable by plants.

Plants are not able to make use of the nitrogen in the atmosphere directly. Atmospheric nitrogen needs to be converted into usable forms before it can be accessed by plants.

The conversion of atmospheric nitrogen to usable form by plants is known as nitrogen fixation and this is achievable by the activities of certain bacteria.

More on nitrogen fixation can be found here; https://brainly.com/question/4191267?referrer=searchResults


Related Questions

The primary food for supplying energy for muscular activity is protein. Group of answer choices True False Next

Answers

Answer:

Carbohydrates, such as sugar and starch, for example, are readily broken down into glucose, the body's principal energy source. Glucose can be used immediately as fuel, or can be sent to the liver and muscles and stored as glycogen.

3. Describe each one of the following types of fractures:
simple fracture
compound fracture
incomplete fracture
impact fracture
comminuted fracture​

Answers

Simple: The bone fracture does not break the skin
Compound: when the bone punctures the skin
Incomplete: the bone does not break completely
Impact: The bone fracture impacts another bone
Comminuted: The bone breaks into 3 or more pieces

List 3 powers Congress has.

Answers

Answer: Make laws.

Declare war.

Raise and provide public money and oversee its proper expenditure.

Impeach and try federal officers.

Approve presidential appointments.

Approve treaties negotiated by the executive branch.

Oversight and investigations.

Explanation: Thats all of their powers just choose 3!!

What is secondary endosymbiosis?
A. a eukaryote envelops another eukaryote
B. a prokaryote preys upon a prokaryote
C. a prokaryote engulfs a eukaryote
D. a eukaryote overtakes a prokaryote

Answers

Answer:

Secondary endosymbiosis is when a living cell engulfs another eukaryote cell that has already undergone primary endosymbiosis. It has happened often enough that it has led to genetic diversity among the organisms on Earth.

Explanation:

hope this helps I don't know Its correct answer

Identify and describe the layers of Earth’s interior.

Answers

The earth consist of 4 layers, the crust, the mantle, the outer core and inner core. These are the cross section of the earth.

14. Which of the following occurs during the electron transport chain?
a. the formation of ATP by oxidative phosphorylation
b. the formation of water
c. a concentration gradient of protons
d. all of the above

Answers

Answer:

All

Explanation:

The electron transport chain is a series of four protein complexes that couple redox reactions, creating an electrochemical gradient that leads to the creation of ATP in a complete system named oxidative phosphorylation. It occurs in mitochondria in both cellular respiration and photosynthesis.

Answer:

D

Explanation:

ATP is created in the ETC

Water is formed as a by product

The concentration gradient is what fuels the ETC. Protons (H+ ions) move across the membrane to create energy.

Hope that helps (and also hope its right, i did bio a while back)

The greatest number of relationships between the
organisms in an ecosystem is best shown in

A. a food chain
B. an energy pyramid
C. a food web
D. an ecological succession diagram

Answers

D an ecological succession diagram



Trust me I’ve done this assignment

The greatest number of relationships between the organisms in an ecosystem is best shown in a food web. Thus, the correct option is C.

What is a Food web?

A food web consists of all the food chains which are present in a single ecosystem. Each of the living thing in an ecosystem is a part of multiple food chains. Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem.

For example- A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass. It is a food web that shows the many different paths plants and animals are connected.

Therefore, the correct option is C.

Learn more about Ecosystem here:

https://brainly.com/question/13979184

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Which pair of traits is most likely to be inherited together?


A. purple eye and brown eye because they are both eye traits


B. aristaless and speck body because they have the greatest chance of crossing over

O

C. curved wing and arc (bent wings) because they have the least chance of crossing-over


D. black body and light eye because they are closest together on chromosome 2

Answers

Answer:

D

Explanation:

The closer together two genes are on a chromosome, the less likely their alleles will be separated by crossing-over.

what is the name given to a virus that attacks a bacterium?

Answers

Bacteriophage, which are also referred to as simply “phage” or a bacterial virus

pls help!!
The following tracking model was created for Hurricane Ike on September 8, 2008. ^^
According to this model, at which point is the storm least likely to make landfall?
1) Point A
2) Point B
3) Point C
4) Point D​

Answers

Answer:

Its Point A

Explanation:

The following tracking model was created for Hurricane Ike on September 8, 2008. Map of Gulf Coast showing the forecasted path of Hurricane Ike on September 8, 2008. The storm’s current location, as of 5 p.m. on Friday, is just south of Cuba, over the Caribbean Sea. The “cone of probability” extends northwest. Point A is located along the Texas coast, right in the center of the cone’s widest point. Point B is located along the coast of Louisiana, toward the easternmost edge of the cone. Point C is located further east, along the coast of the Florida Panhandle. Point D is located on the border between Mexico and Texas, toward the southwestern-most edge of the cone. According to this model, at which point is the storm least likely to make landfall?

Human cells have 46 chromosomes. Each chromosome consists of a pair of identical chromatids attached together by a structure called a centromere. Once the chromosome has split, each chromatid is called a daughter chromosome. At the end of cytokinesis, how many daughter chromosomes will be found in each cell? Explain.

Answers

Answer:

92 daughter chromosomes.

Explanation:

There are 46 chromosomes in a normal cell and each chromosome turns into 2 daughter cells. So 46 plus 46 is 92.

In general, did the simulated mice align with your predictions from the Punnett squares?.

Answers

Research studies are often carried out using mouse. From the study, the simulated mice was said to align with the predictions from the Punnett squares. So the answer is Yes.

The reason why some of the percentages did not exactly match your predicted results because the Mice don't have large litters, so the sample size was not large enough.

If the experiment is to be done again, I can improve upon experimental design by;

Increase the number of mice bred. Examine a different trait within mice. Examine a trait in another species. Test patterns for future generations.

A lot of studies is been carried out on the Genetics of the mouse.  The  early development of inbred lines were studied. The mouse is known to be a good tool to identify the genetic basis of both normal and disease traits.

See full question below

In general, did the simulated mice align with your predictions from the Punnett squares?

(Choices: Yes, No)

Error Analysis: What might be the reason that some of your percentages didn't exactly match your predicted results?

Options are;

Gametes aren't responsible for inheritance. Mice don't have large litters, so the sample size was not large enough. The wrong type of mice were used.

If you did the experiment again, how could you improve upon the experimental design? Check all that apply.

Increase the number of mice bred. Examine a different trait within mice. Examine a trait in another species. Test patterns for future generations

Learn more from

https://brainly.com/question/12038732

Answer:

The answer is yes....

Explanation:

It would gain nutrients from the water in the environment.

Answers

Answer:

True?

Explanation:

what hormone do the c-cells secrete, and what is the function of this hormone?

Answers

Answer:

Calcitonin is one of those critical hormones. Calcitonin is a hormone that the C-cells in the thyroid gland produce and release. It opposes the action of the parathyroid hormone, helping to regulate the blood's calcium and phosphate levels. How does calcitonin work?

The hormone that the c-cell secrete is calcitonin. The function of calcitonin is a hormone that regulates the amount of calcium in your blood by decreasing it.

What are hormones?

The important hormone is calcitonin. Calcitonin is a hormone produced and released by the thyroid gland's C-cells. It works in opposition to the activity of the parathyroid hormone, assisting in the regulation of calcium and phosphate levels in the blood.

Calcitonin is a hormone produced by the thyroid gland, which is a tiny, butterfly-shaped gland found near the throat. Calcitonin regulates how the body uses calcium.

Calcitonin is a cancer marker. Tumor markers are substances produced in the body by cancer cells or normal cells in response to cancer.

Thus, calcitonin is the hormone secreted by c-cells. Calcitonin is a hormone that controls the quantity of calcium in your blood by reducing it.

To learn more about calcitonin, refer to the link:

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How does temperature affect the rate of a reaction?
A. temperature decreases, the kinetic energy of the particles increases and the number of collisions between particles increases
B. As temperature increases, the kinetic energy of the particles increases and the number of collisions between particles increases
C. As temperature increases, the kinetic energy of the particles decreases and the number of collisions between particles increases
D .As temperature increases, the kinetic energy of the particles decreases and the number of collisions between particles decreases

Answers

The answer is B because the kinetic energy increases so does the number of collisions between particles

Standard SB3
1. Using Mendel's Law of Segregation and Law of
Independent Assortment, explain how meiosis leads to genetic variation.

Answers

Answer:

Homologous chromosomes can independently assort along the metaphase plate during metaphase 1, meaning it doesn't not matter the order in which they line up, making it have more diverse possibilities. The law of segregation says that one allele from a gene can go to either gamete randomly, therefore there are 4 genetically different gametes from each parent that can be formed and come together to form a genetically diverse person.

Explanation:

Help in this two questions

Answers

Answer:

i dont know what it is i need points

How are fungi classified?

Answers

Explanation:

Fungi are eukaryotic organisms that include microorganisms such as yeasts, moulds and mushrooms. These organisms are classified under kingdom fungi.

The organisms found in Kingdom fungi contain a cell wall and are omnipresent. They are classified as heterotrophs among the living organisms.

Which of the following mutations would be the LEAST likely to have a harmful effect on an organism?

Answers

what are the answers?

what two numbers between 10 and 20 have 6 as their GCF

Answers

The two numbers would be 12 and 18.

if you have been to a beach for a whole day, then you have seen tides roll in and out. What causes
Earth's high tides?

Answers

Answer:

The Moon

Explanation:

High tides and low tides are caused by the moon. The moon's gravitational pull generates something called the tidal force. The tidal force causes Earth—and its water—to bulge out on the side closest to the moon and the side farthest from the moon. These bulges of water are high tides.

Answer:

it's caused by the gravitational  forces from the moon.

Explanation:

grew up at the beach

hope this helps

how can you distinguish the dorsal from the ventral horns

Answers

the dorsal horns are the thinner projections of dark matter that jut out from the rest towards the dorsal / back side of the spinal cord. the ventral horns are the wider projections of dark matter towards the ventral / front side of the spinal cord.


What controls the amount of herbivores? Producers or predators? Explain

Answers

Answer:

Predators

Explanation:

Because they eat all the meat so if they wanted to they could eat the predators controlling the lesser amount

What might explain the patterns of population density in northern Africa?

Answers

Answer:

Population density naturally varies a great deal within each country according to climatic conditions, topography, mineral deposits, rainfall, soil cultivation, etc

Why is farming good for the society? (Economic growth related) please give me scientific questions, I will mark you as brainly. Thank you

Answers

Answer:

Agriculture gave people the opportunity to create civilizations, fight hunger and work to combat challenges in population growth and climate change.

Explanation:

Another positive development in farming is the rapid expansion of farmers markets. Farmers markets allow small farmers to interact directly with consumers. The food system remains within the local economy by being locally produced and eliminates the need for long-distance transportation. The opportunity to purchase locally grown food proves invaluable as the demand for it rises.

describe some of the adaptation of insects that allows them obtain their food from other organisms​

Answers

Answer:

Parasitism

Explanation:

An example of this would be parasitism. It is a way in which some insects get food from other animals by living inside a host. It is a relationship in which the other animal is damaged while the parasite (in this case the insect) benefits.

Caroline set up a fourth test tube that contained a leaf and was exposed to dim


light.




After two hours the colour of the indicator solution in this test tube remained orange.




Explain why.

(hydrogen carbonate indicator test)

Answers

Answer:

Answer

+ 5.0

Answer: The NEGATIVE CONTROL is the

test tube that is filled with ONLY distilled

water.

Explanation:

A negative control of an experiment is

carried out alongside the main primary

experiment except that the treatment is

changed to something that is predicted

to have no result. In the negative

control, the student does not expect any

response. This would help the student

compare the result of a new experiment

against an already known existing results.

Analysing the experiment carried out

by the student, She filled two test tubes

with distilled water and placed a piece

of Elodea in one of the tubes, leaving

the other without a plant. The other test

tube that contains only distilled water is

the negative control because she wasn't

expecting any result from it. It's also

served as a control sample to the primary

experiment. This is observed as she

blew in each tube to add carbon dioxide,

which caused the distilled water to

become more acidic. This would help the

student know that the that experimental

results are valid and to ensure that time is

saved

Sexual reproduction in animals depends on the production of gametes. Which of these processes produces gametes in animals?

Answers

Answer: in the ovaries of female, and the testes of male animals!!

Explanation:

Cross a heterozygous black rabbit with a heterozygous black rabbit. What is the

Genotype Percentages? What is the Phenotype Percentages? (How many will be

black, How many white? Percentages of BB Bb & bb)

Answers

Explanation:

Bb x Bb

1BB, 2Bb, and 1 bb

Let B=black fur allele(dominant) and b=white fur allele(recessive),

¾ of the rabbit will be black while ¼ will be white.

Hence,

¾×100%=75%

¼×100%=25%

The breathing rate of an aquatic animal is more than that of of a terrestrial animal . Why ?​

Answers

It has to filter out the small amount of oxygen in the water, unlike terrestrial creatures.

Answer:

Since the amount of oxygen dissolved in water is comparatively lower than that in air, the aquatic animals have to breath rapidly to take in sufficient oxygen. Thus, the rate of breathing in aquatic organisms is much faster than that seen in terrestrial organisms

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