What is a main difference between primary succession and secondary succession? A. Primary succession happens slowly, and secondary succession happens rapidly.
B. Small plants grow first during primary succession, while large trees grow first during
secondary succession.
C. Primary succession occurs after a natural disaster, and secondary succession occurs
before a natural disaster.
D. Primary succession is the colonization of new sites, and secondary succession is
colonization of previously inhabited sites.

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.

the answer is: metamorphic rocks often show the presence of fossils, also a

hope i

-lavira: )

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