A)decomposing dead plants and animals
B)making extreme conditions more livable
C)providing shelter for plants and animals
D)producing nuclear power for humans
2 Answers
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B)making extreme conditions more livable is best
they produce oxygen as a biproduct
Source(s): .. -
This is probably the desired answer:
A)decomposing dead plants and animals
I am assuming here that “living systems” means “ecosystems.”
