WEBVTT
Kind: captions
Language: en

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What is the carbon cycle? Carbon is the
chemical backbone of all life on Earth.

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All of the carbon we currently have on
Earth is the same amount we have always  had.

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When new life is formed, carbon forms key molecules like protein and DNA.

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It's also found in our atmosphere in the form of carbon dioxide, or C02.

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The carbon cycle is nature's way of reusing carbon atoms, which travel from the atmosphere

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into organisms and the Earth, and then
back into the atmosphere, over and over again.

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Most carbon is stored in rocks and
sediments, while the rest is stored in

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the ocean, atmosphere, and living
organisms. These are the reservoirs, or

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sinks, through which carbon cycles. The
ocean is a giant carbon sink that

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absorbs carbon. Marine organisms from
marsh plants to fish, from seaweed to

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birds, also produce carbon through living
and dying.

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Sometimes dead organisms become fossil fuels that go through combustion,

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giving off C02 and the cycle continues...