Question

Examine the diagram of the carbon cycle below. What process is occurring at Letter A, and what is its effect on the levels of atmospheric carbon dioxide?

Simple carbon cycle image with letter A above factory emissions

(1 point)

Photosynthesis; it increases the levels of atmospheric carbon dioxide

Cellular respiration; it increases the levels of atmospheric carbon dioxide

Burning of fossil fuels; it increases the levels of atmospheric carbon dioxide

Burning of fossil fuels; it decreases the levels of atmospheric carbon dioxide

Answer 1

Burning of fossil fuels; it increases the levels of atmospheric carbon dioxide.

Combustion of coal, oil, and natural gas in factories releases stored carbon as CO2, raising atmospheric carbon dioxide concentrations.