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3 years ago

15

The principle characteristic distinguishing marine and freshwater ecosystems is _______. a. temperature b. presence of corals c.

presence of fish d. dissolved salt

2 answers:

GalinKa [24]3 years ago

5 0

D.
hope this helps!!!

Shtirlitz [24]3 years ago

4 0

The answer would be dissolved salt. Its the presence of saltwater in marine and the absence of it in freshwater that makes the big difference.

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From the given information:

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Here,

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Negative symbol indicates deceleration.

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3 years ago