decreased variations in day length increased average air temperature increased burn rate for incoming meteoroids decreased rate of ozone layer destruction
I gave my students this multiple choice question: An increase of carbon dioxide in Earth's atmosphere is most likely to have which effect?

Only one answer is correct among these 4 choices:
- decreased variations in day length
- increased average air temperature
- increased burn rate for incoming meteoroids
- decreased rate of ozone layer destruction

Could you tell me which one is correct?

increased average air temperature