Your answer is, The Devonian Period.
The first major groups of amphibians ("stem") developed in the Devonian period, around 370 million years ago, from lobe-finned fish which were similar to the modern coelacanth and lungfish.
Sure hope this helps you
Answer:
B) Sea level rises as Earth becomes warmer and glaciers melt.
This answer would be true, b/c it is not false. It's not false b/c coral reef ecosystems <em><u>DO</u></em> support over a million different species.