Identify which contains more carbon – the oceans or the atmosphere?

The oceans contain more carbon than the atmosphere. Here's a step-by-step explanation:

1. Carbon is stored on our planet in what are called "carbon reservoirs" or "carbon sinks". These include the atmosphere, the terrestrial biosphere (which includes the organic matter in soil), the oceans, and the sediments that include fossil fuels.

2. The amount of carbon in the atmosphere is about 850 gigatons (a gigaton is one billion tons). This carbon is in the form of carbon dioxide gas (CO2) and methane (CH4).

3. The oceans contain about 50 times more carbon than the atmosphere. The surface layer of the ocean holds about 670 gigatons of carbon, and the deep ocean holds about 37,000 to 40,000 gigatons of carbon dissolved in seawater.

4. Therefore, the oceans contain significantly more carbon than the atmosphere.