Question

6. Explain how marine animals are able
to survive in the hydrosphere.​

Answer 1

 There are several ways deep-ocean animals survive in such an environment.

First off, the deep ocean is dark because sunlight can’t penetrate very far into the water. Many animals make their own light, called bioluminescence, to communicate, find mates, scare predators, or attract prey. Bioluminescence looks a bit like the glow sticks you use on Halloween, but is made naturally by chemical reactions within an animal.

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