decreased variations in day length increased average air temperature increased burn rate for incoming meteoroids decreased rate of ozone layer destruction
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: An increase of carbon dioxide in Earth's atmosphere is most likely to have which effect?
Possibilities:
- decreased variations in day length
- increased average air temperature
- increased burn rate for incoming meteoroids
- decreased rate of ozone layer destruction

increased average air temperature