What Are the Correct Answers to These Environmental Science Questions?

[nattie44]

Environmental Science...help!

Hi, Anyone knows the answer to this questions?

1) Solutions are always comprised of:
a)water and salts
b)solvents and solute
c)compounds and ions
d)liquids and solids

2)Plants get the nitrogen they need to build additional cells from:
a)directly from the nitrogen in the air
b)protein in the cells
c)ammonia or nitrate in the soil
d)denitrifying bacteria

3)Ammonia (NH3) is converted to nitrite (NO2) by:
a)nitrifying bacteria
b)decomposers
c)denitrifying bacteria
d)nitrogen-fixing bacteria

4)Phosphorus is needed by organisms for
a)bones
b)cell membranes
c)DNA
d)All of the above are correct.

I take any help you can give me. Thank you very much!

 

[GCT]

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