Which one of the following constituents of the atmosphere causes greatest changes in climate and weather?

A. Nitrogen

B. Oxygen

C. Ozone

D. Water Vapour

Answer: Option D

Solution(By Examveda Team)

Water Vapour constituents of the atmosphere causes greatest changes in climate and weather. As Earth warms, the rate of evaporation and the ability of air to hold water vapor both rise, increasing the amount of water vapour in the air. Because water vapour is a greenhouse gas, this leads to further warming.