Question

The diagram shows that currently about 100 gigatons/year of carbon are moved from the atmosphere to vegetation on land. Which process could decrease this number?

ncdc.noaa.gov

reducing the amount of urban area in the world
cutting down large areas of forests
warming up the oceans
increasing respiration rates

Answer 1

the answer is b cutting down large areas of forest

Answer 2

Cutting down large areas of forests
Plants are responsible for fixation of atmospheric carbon dioxide. If the number of plants is reduced, the amount of carbon dioxide moved from the atmosphere to vegetation will also decrease.