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bonufazy [111]
3 years ago
8

What is one form nitrogen can take when it is in the biosphere?

Geography
2 answers:
NeTakaya3 years ago
7 0

Answer:

Ammonification

Explanation:

dlinn [17]3 years ago
4 0

Answer:

nitrogen can be used to form macromolecules like proteins and nucleic acids (DNA and RNA). Nitrogen gas into ammonium, nitrate, and nitrite compounds.

Explanation:

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What term is described as a undersea shelf
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Is writing "are a" in a sentence correct​
IRISSAK [1]

Answer:

No.

Explanation:

No, writing "are a" in a sentence is not correct​ because ''are '' is used for plural objects or things such these are boys, footballs are big etc while n the other hand, ''a'' is used for singular objects such as a ball, a boy etc so these two words which are used in separate sentences not in a single sentence with each other. so we can say that we can't write "are a" in a single sentence.

4 0
2 years ago
it is possible for two stars to have different temperatures and different sizes but the same luminosity. explain how.
Darina [25.2K]

Answer:

Two stars (a and b) can have the same luminosity, but different surface area and temperature if the following condition is met:

(T_a^4)(R_a^2) = (T_b^4)(R_b^2)

Explanation:

The luminosity of a star is the total energy that produces in one second. It depends on the size of the star and its surface temperature.

L = σ(T^4)(4πR^2)

L is the luminosity f the star, T is the temperature of the surface of the star and R is its radius.  

Two stars can have the same luminosity if the relation between the radius and the surface temperature is maintained.  

To see this lets suposed you have 2 stars, a and b, and the luminosities of each one of them:

L_a = σ(T_a^4)(4πR_a^2)

L_b = σ(T_b^4)(4πR_b^2)

you can assume that L_a and L_b are equal:

σ(T_a^4)(4πR_a^2) = σ(T_b^4)(4πR_b^2)

Now, you can cancel the constants:

(T_a^4)(R_a^2) = (T_b^4)(R_b^2)

as long as this relation between a and b is true, then the luminosity can be the same.

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3 years ago
Where does having clean drinking water present the most difficult problems?
Kazeer [188]

less-developed countries

6 0
3 years ago
Read 2 more answers
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