Lungs and capillaries both have porous linings that allow certain substances to move into or out of the structures. Which function do these porous linings most likely serve in living organisms? A. heat release
B. gas exchange
C. carbohydrate absorption
D. osmotic pressure regulation

B. Gas exchange

Explanation:

because the lungs bring air into your body, it needs a way to transfer the oxygen into your blood stream.

Luckily for us, our lungs have porous linings, which will help the oxygen go directly into our blood stream.

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

after making a punnet square using bv bv bv bv you will find that the ratio will be 9: 7 or a 128.6% probability.

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