About 70percent of the Carbon Dioxide (CO₂) in the Atmosphere

Multiple Choice

About 70percent of the carbon dioxide (CO₂) in the atmosphere comes from _______________; the remainder comes from _________________.

A) animal flatulence; the use of fossil fuels
B) photosynthesis; animal flatulence
C) the use of fossil fuels; the loss of trees and other forest organisms
D) evaporated water pollutants; agricultural fertilizers