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shutvik [7]
3 years ago
9

Ecosystems can be changed by natural events or by human actions. Which is NOT a natural event?

Biology
2 answers:
Vladimir [108]3 years ago
7 0
C. Pollution is man made if it weren’t for our factories there wouldn’t be this much pollution
harina [27]3 years ago
5 0
Hi! The answer would be B. pollution from a factory entering a river because humans built the factory so that it would drain into the river, therefore it is unnatural.
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