Question

more radiated heat is being reflected back to earth and less is radiating into space. what is one reason for this change? the burning of fossil fuels is increasing the production of carbon dioxide the sun is producing more heat than normal. clouds in the atmosphere are absorbing water vapor. the average temperature on earth is decreasing

Explanation:

Carbon dioxide is a greenhouse gas. When fossil fuels are burned, more carbon dioxide is released into the atmosphere. Greenhouse gases trap heat (radiated heat) in the Earth - atmosphere system, preventing it from radiating into space. The sun's heat output is relatively stable over short - term human - relevant timescales. Clouds forming from water vapor condensation do not directly cause this heat - trapping in the way described. And if the average temperature on Earth were decreasing, it would not be related to more heat being trapped (which is what the question implies).

Answer:

The burning of fossil fuels is increasing the production of carbon dioxide.