Studies show that,since 1979,dry seasons in the southern Amazon rainforest have lasted approximately one week longer each decade.Thus,current dry seasons are three to four weeks longer than they were in 1979,causing the rain forest to die back.The likely effect of this change on global carbon cycle and climate change will be a(n)_______ in atmospheric CO₂,leading to _______ world temperatures.

Question

Quizplus · Accepted Answer

The increase in dry seasons in the southern Amazon rainforest causes the rainforest to die back, leading to a decrease in the uptake of atmospheric carbon dioxide. This will result in an increase in atmospheric CO2, which is a greenhouse gas, leading to increased global temperatures. Therefore, the correct choice is A, increase in atmospheric CO2, leading to increased world temperatures.

Studies Show That,since 1979,dry Seasons in the Southern Amazon Rainforest