One way we divide up the water column in the ocean is to describe how much light is available- -these are the Photic Zones. We also divide up the ocean by depth--these are the Pelagic
zones. How do the Photic zones compare to the Pelagic zones? Which names match? etc.

explanation:

the fossil record extends back to a dog-like ancestor some 55 million years ago, which gave rise to the first horse-like species 55 to 42 million years ago in the genus eohippus.

1) a

2)c

3)a

4)c

5)b

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