If We Burn Fossil Fuels,which Release Carbon Dioxide and Warm

Multiple Choice

If we burn fossil fuels,which release carbon dioxide and warm the atmosphere,as the oceans warm they will release more carbon dioxide,which warms the atmosphere.This is an example of ________ feedback.If the increased atmospheric carbon dioxide causes increased plant growth which removes carbon dioxide and cools the atmosphere,this is an example of ________ feedback.

A) positive positive
B) positive negative
C) negative negative
D) negative positive