How are oceans useful to man?

Answer 1

Oceans are useful to people because even though only little creatures(such as plankton) live there, bigger creatures eat those little creatures, and so on and so forth. So really if there were no oceans, there would be no plankton, and no bigger animals to eat them, and we wouldn't have fish to eat, and land animals wouldn't be able to eat fish either, so we all wouldn't even be alive if there weren't oceans. Sorry it's so long, it is very difficult to explain over the internet.

Answer 2

the ocean serve man in many ways they are source for the ocean are the store houses,

and fishes etc.

Answer 3

Oceans are useful to have an ecosystem for salt water fish. people make money fishing out there. and we harness the power of the waves to turn water turbines to make electricity.are you smart