If earth’s atmosphere is made up of 78% nitrogen, why is nitrogen a limiting factor for producers?
A.
Consumers respire all of the available nitrogen.

B.
Nitrogen is unusable in its liquid form.

C.
There are more plants than gaseous nitrogen.

D.
Nitrogen is unusable in its gaseous form.

Answers

Answer 1
d is the answerrrrrrrrrr

Related Questions

Francis was recording plant heights for an experiment. Each time that she took a measurement, she wrote it down. Then, she measured the plant again and compared the new measurement to the one that she had recorded in her notebook. What was she most likely trying to do
revise her hypothesis
check her memory
make the data more valid
form a conclusion

Answers

revise her hypothesis I guess because

she recorded the experiment again and again and then wrote it so she could get more knowledge about the experiment

Answer:

A

Explanation:

edge 202

What are the chances a
heterozygote passes on
either a dominant or
recessive allele?

Answers

Answer:

A parent with one copy of a dominant allele and one recessive coded Ww for the widow's peak  is called heterozygous for a trait and has a 50 percent chance of passing on the dominant allele to each of his or her offspring, regardless of the gene inherited from the other parent.

Explanation:

hope this helps in some way sorry if it does not

Why are whales closer related to giraffes than tuna?

A. Whales and giraffes are both mammals.

B. Tuna live in water but they are fish and not mammals.

C. Both of these are correct.

Answers

Answer:

Hey mate.....

Explanation:

This is ur answer.....

A. Whales and giraffes are both mammals.

Hope it helps!

Brainliest pls!

Follow me! :)

Answer:

C. Both of these are correct.

Explanation:

Whales are the artiodactyls a group of hoofed mammals that includes deer, pigs, giraffes, camels and hippos.

How do antibodies fight pathogens

Answers

Answer:

1) Antibodies are secreted into the blood and mucosa, where they bind to and inactivate foreign substances such as pathogens and toxins (neutralization).

2) Antibodies activate the complement system to destroy bacterial cells by lysis (punching holes in the cell wall).

why is studying climate change a scientific challenge? ( please be specific and
go into depth)

Answers

Answer:

Climate change is already happening: temperatures are rising, drought and wildfires are starting to occur more frequently, rainfall patterns are shifting, glaciers and snow are melting and the global mean sea level is rising. These ever-changing trends mean that scientists have to be well acquainted with all this which requires a great deal of understanding and patience.

The political interests in research often limit the results and many a time misleading

Data for climate research is in many instances difficult to access, often at a price, and according to the source and type of data, the formats for retrieval can be very different. In addition, data may not be available for the same time and space scales. There is often an incompatibility between socio-economic and physical data, both necessary for climate modeling efforts because data collection is generally carried out by different agencies for different purposes. This means scientists have to analyze this data as useful and then research on it.

Explanation:

Pls vote my answer as brainliest

Which of the following is NOT one of Darwin's conditions for natural selection to occur?

Answers

Answer:b

Explanation:

The ability of an individual organism to survive and reproduce is known as its___

Answers

Answer:

Fitness of the induvitual

Explanation:

Sorry if am wrong

What map unit (Centimorgan) is adopted in
the construction of genetic maps?

Answers

A unit of distance between genes on chromosomes, representing 1% cross over. Explanation: 1 map unit represent 1 % cross over. Map unit is used to measure genetic distance.

MARK ME AS BRAINLIEST.

State two similarities and two differences between an
amoeba and a plant cell:

Answers

Answer:

S: Both are eukaryotic (1) and contain a cytoplasm + vacuole (2).

D: Amoebas lack a cell wall (1) and are not photosynthetic organisms (2).

Explanation:

Can someone explain to me?

Answers

Answer:

You are supposed to find the messed up gene(s) and find out what disorder or disease that messed up gene(s) makes

Explanation:

PLEASE HELP! WILL MARK BRANLIEST!

Carbon Dioxide trapped in the atmosphere causing the Earth to become is called the ___:

A. global warming, B. greenhouse effect, C. botanical gardens effect

Explain why.

Answers

Answer:

Greenhouse effect

List Name two material resources and give an
example of how each is used.

Answers

Answer:

Wood : used for building tables and chairs, and sometimes houses

Plastic: used in a way wheir we put drinking water in it, or grocceries.

Explanation:

Hope this helps!!!

Answer:

sand and cotton. Sand is a raw material that is used in making a clear window glass.  such as socks and shirts, are made from cotton.

hope it helps

Atividade de Português

Answers

Answer:

1- C

2-

3- C

4- C

Explanation:

what comes first egg or chicken. please answer ASAP

Answers

Answer:

Egg.

Explanation:

Technically speaking, dinosaurs were some of the first living creatures on Earth, and they laid eggs long before chickens were around.

The egg comes first,

How is the water and boiling point of water useful to us

Answers

Answer:

The boiling point of water can be used to illustrate the importance of hydrogen bonds in living systems. The boiling point of a compound is the temperature at which a liquid becomes a gas.  When the temperature is high enough to separate the individual molecules from each other, they boil, or become a gas.

Explanation:

hope this helps

Day to day tasks
A lot of things we do is relient on water and many food are needed with water. And non visible water particles are recognizable with its boiling point

What are the chances that the parents will have a hairless baby guinea pig?

A. 75%


B. 25%

Answers

Answer:

I believe it is B

Explanation:

hope this helps

Answer:

B. 25%

Explanation:

There is a 50-75% or about half chance that the babies bred by a Skinny Pig and a haired Skinny pig gene carrier, will have hairless Skinny pig babies. The rest of the babies will just be skinny pig gene carriers. There is only a 25% chance that 1 or so hairless skinny babies will be born in these litters.

Which of the following is a FALSE statement about fungi?
A. Fungi may be multicellular or unicellular

B. Fungi are heterotrophs

C. Fungi have a cell wall made of chitin

D. Fungi are autotrophs

Answers

D

fungi are not autotrophic as they lack chloroplast

Answer:

D. Fungi are autotrophs

Explanation:

Fungi are autotrophs is a false statement about fungi. Fungi are heterotrophs.

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Answers

I think it is B but I am not so sure

What is the usual CORRECT pairing of DNA? Look closely at the picture to figure it out.

A. T-C and G-A

B. C-G and A-T

Answers

Answer:

B. C-G and A-T

Explanation:

The pairings are adenine and thymine and cytosine and guanine

Answer:

B. C-G and A-T

Explanation:

It is cytosine and guanine, & adenine and thymine. So, option (B) is correct.

Methane is a powerful greenhouse gas. Which of the following is NOT a
source of methane?
O melting of methane hydrates
O decay of living things/landfills
O increased evaporation
O cow farts

Answers

Answer:

increased evaporation.

Explanation:

there is no methane in or near the process of evaporation.

hope this helps

The use of coal to generate electricity in a power plant can often appear to be the least expensive option, but only if the environmental impacts of burning coal are not accounted for. Select the option that best describes some of the environmental impacts of using coal for electricity generation A. Air pollution resulting from burning coal B. Erosion and water pollution from mining operations C. Both A and B are correct D. Neither A nor B are correct

Answers

Answer:

C. Both A and B are correct

Explanation:

Coal is one of the important fuel for the generation of electric energy in the steam generator. Coal is mined from the coal mines and is fed into the steam generator to produce steam that is used to generate electricity.

The mining of coal can affect the environment nearby as it destroys the forest cover or trees nearby. It leads to erosion and water pollution. Also the carbon emission from the burning of the coal releases harmful pollutants inn the atmosphere which causes air pollution.

Thus both options (A) and (B) are correct.

¿POR QUÉ ES TAN IMPORTANTE PARA LAS ESPECIES EL OLFATO?

Answers

El olfato es vital para la supervivencia de la mayoría de humanos y animales, ya que les permite rastrear alimentos y agua, encontrar pareja e incluso comunicarse.

Explanation:

una pregunta porque puedes hablar español si esto es de ingles este Braylin

meaning of onion epidermal cell​

Answers

Answer:

Outermost layer

Explanation:

Onion epidermal cells act as a barrier against infections and fungus that might injure the delicate tissues. Onion epidermal cells  are frequently used to educate children to botanical anatomy or to explain plasmolysis due to their simple and basic structure and transparency.Onion epidermal cells is used for cover onion from weather  too.

Which hormone is involved in female puberty, pregnancy, and menopause?

Answers

Estrogen is involved in all three.
Estrogen plays a big role in reproductive and sexual development, including:
puberty
menstruation
pregnancy
menopause

Seed tray can be used for sowing of cucumber seeds ______

True or false​

Answers

Answer:

true

Explanation:

You can germinate cucumber seeds by direct seeding into a garden bed or in the soil in a seed tray.

Describe volant adaptational features of birds.​

Answers

Answer:

Volant adaptation refers to the adaptations done by those animals which have an aerial mode of life or spend most of their time flying. ... -forelimbs modified into wings to help flying. -body covered with feathers. -light weight hollow bones filled with air ( pneumatic bone).

When both alleles for a gene are expressed in a heterozygous offspring

a.Allele
b.Codominance
c.Anther
d.Geneotype
e.O F1 Generation

Answers

Answer:

Explanation:

Codominance, when both characteristics are expressed.

What prevents blood from circulating backward in veins?
A.valves
B. capillaries
C. lungs
D. heart

Answers

Answer:

A.Valves

Explanation:

The pulmonary vein empties oxygen-rich blood from the lungs into the left atrium. As the atrium contracts, blood flows from your left atrium into your left ventricle through the open mitral valve. When the ventricle is full, the mitral valve shuts. This prevents blood from flowing backward into the atrium while the ventricle contracts.

The punctuated equilibrium model of evolution agrees with the theory of gradualism
on the idea of

a) inheritance of acquired characteristics
b) natural selection
c) use and disuse of organs
d) the rate of speciation

Answers

Natural selection. They disagree on the rate, inheritance, and whatever c is talking about.

What ideas were changing in the scientific community at the time of Darwin's travels? How might those new ideas influenced Darwin?

Answers

Answer and Explanation:

At the time of Darwin's travels, the scientific community was beginning to abandon ideas linked to creationism to adopt more scientific and testable concepts, less linked to religiosity. Darwin was very influenced by these new concepts and decided to study a way to apply them to the biological diversity that planet earth presented. He wanted to explain this diversity through scientific data, obtained by experiments and logical reasoning, without the interference of creationist concepts and that would show how life on earth changes over the years and how species of living beings were created. This was one of the kicks that made him start his travels and his studies on biological evolution.

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