an increase in the amount of coral reefs a decrease in temperature, causing earlier frosts an increase in the number of heat waves, causing droughts a decrease in temperature, causing shorter growing seasons
I gave my students this multiple choice question: Which is a possible consequence of global warming?

Only one answer is correct among these 4 choices:
- an increase in the amount of coral reefs
- a decrease in temperature, causing earlier frosts
- an increase in the number of heat waves, causing droughts
- a decrease in temperature, causing shorter growing seasons

Could you tell me which one is correct?

an increase in the number of heat waves, causing droughts