Question

A carbon sink is a part of the Earth's ecosystem that stores carbon in one form or another for hundreds, thousands, and even millions of years.

Forests and oceans are known to be carbon sinks. Which of the following marine organisms play a major role in making the ocean a carbon
sink?

Answer 1

ocean plays an important part in the carbon cycle. Overall, the ocean is called a carbon 'sink' because it takes up more carbon from the atmosphere than it gives up. ... The using up of carbon by biological and chemical processes allows more carbon dioxide to enter the water from the atmosphere.