Answer:
I think it is B
Explanation:
The meaning of abrasion is friction and repeated impact by water, ice or wind.
Decomposers are essential in breaking down organic matter into useful ones. For the nitrogen cycle, they break down bodies of dead organisms turning it into ammonia. Also, some bacteria break down nitrates turning into nitrogen which goes back to air.
Fitness is the quantitative representation of natural and sexual selection within evolutionary biology. It can be defined either with respect to a genotype or to a phenotype in a given environment.
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Answer:
The First answer is C Digestion changes proteins into amino acids
And the secoud answer is D pancreas
