Increased level of carbon dioxide in the atmosphere traps the heat rays reflected by the earth causing an increase in the temperature on the earth. This is
A. Local warming
B. House warming
C. Global warming
D. Country warming
Answer:C
Increased level of carbon dioxide in the atmosphere traps the heat rays reflected by the earth causing an increase in the temperature on the earth. This is
A. Local warming B. House warming C. Global warming D. Country warming