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ASHA 777 [7]
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
Physics
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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