Carbon Cycle

How does carbon get from the atmosphere into living things?

Select all of the options that correctly complete the following sentence.

The high concentrations of carbon dioxide during the northern hemisphere winter are due to:

Which is a long-term carbon store?

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

Note: Most of the carbon in sea water and air is in carbon dioxide.

Determine which absorbs more carbon per year – photosynthesis on land or in the ocean.

Identify the largest carbon reservoir on Earth.

Carbon dioxide is transferred between the atmosphere and oceans by gas exchange.

Determine the option that best completes this sentence.

In the natural carbon cycle, the overall flow of carbon by this process is: