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Alika [10]
3 years ago
12

Ponds and rivers are two types of

Chemistry
2 answers:
Alex17521 [72]3 years ago
8 0
Freshwater ecosystems, because marine includes things more like the ocean depths, rain forests are FORESTS, and rivers and ponds have fresh water.
NeX [460]3 years ago
5 0
<u><em>Ponds and rivers are two types of  . . . . freshwater ecosystems</em></u>
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HOW TO CALCULATE MOLAR MASS:

The molar mass of a compound can be calculated by summing the atomic masses of its constituent elements.

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