Which elements listed below threaten our marine ecosystem?

asked Feb 22, 2017 151k views

2 votes

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2 votes

Mercury could be the answer but i do not see the answers listed

Ock answered Feb 23, 2017

by Ock

8.1k points

2 votes

the answer can be more than one, oil spills and non-native species

ThePianist answered Feb 28, 2017

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