Which of the following human activities would affect the natural cycles on earth? a. burning fossil fuels c. factories giving off pollutants via smokestacks b. growth of agriculture d. all of the above

D. All of the above

Explanation: Human activities such as deforestation, industrialization, fossil fuel burning have direct and indirect effect in the biochemical, geographical and physical processes that affects the earth.

Digging up fossil fuels and burning them, leads to the release of carbon dioxide in the atmosphere faster than natural systems can clean up, increase in the release of carbon dioxide leads to an increase in greenhouse gases in the atmosphere which causes the global warming.

i think that it is plants