What is the most likely effect a decrease of plant life in the biosphere would have on the atmosphere? . a. a decrease in plant life would have no effect on the atmosphere. b. a decrease in plant life would cause carbon dioxide levels to increase and oxygen levels to decrease. c. a decrease in plant life would cause carbon dioxide levels to decrease and oxygen levels to increase. d. a decrease in plant life would cause an increase in all gases in the atmosphere.

Answer;

A decrease in plant life would cause carbon dioxide levels to increase and oxygen levels to decrease.

A decrease in plant life would cause carbon dioxide levels to increase and oxygen levels to decrease is the most likely effect due to the decrease of plant life in the biosphere would have on the atmosphere.

Explanation;

-Plants absorb the carbon dioxide in the atmosphere most of of which is produced by the industrial production processes.

-They take in carbon dioxide and give oxygen thus maintaining the amount of carbon dioxide in the atmosphere.

Therefore; destroying trees and other plants means the level of carbon dioxide increases in the atmosphere due to decreased absorption of the gas by plants, and also a decreased amount f oxygen release to the atmosphere.