7. Why is ocean acidification considered to be a very se- rious problem? If acidity levels in the ocean rise
sharply during your lifetime, how might this affect
you? Can you think of ways in which you might be
contributing to this problem? What could you do to
reduce your impact?
90

Explanation:

meet. google. .com/zir-xxot-war

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.

correct answer is a. and d.