Question

Animals in the deep look very similar to the organism on the right (they seem very prehistoric). This is because: (1 point)
Responses

They need skin which can tear easily so it looks translucent
They need skin which can tear easily so it looks translucent

The environment has been relatively stable for 100 million years so the organisms have not needed to adapt or change.
The environment has been relatively stable for 100 million years so the organisms have not needed to adapt or change.

They come up to the surface during the day to feed and then go back down
They come up to the surface during the day to feed and then go back down

They are able to do chemosynthesis

Answer 1

The environment has been relatively stable for 100 million years so the organisms have not needed to adapt or change.

Explanation: Deep-sea conditions (cold, dark, high pressure, stable chemistry) change little over geologic time, so many lineages show very slow morphological change ("living fossils"). (Chemosynthesis is performed by microbes, and vertical migrations occur at night, not “come up during the day.”)