A major possible negative feedback for the climate system is the loss of arctic ice in the summer and the resultant drop in albedo, which can exacerbate warming. Additionally, burning fossil fuels releases greenhouse gases that lead to increased warming and further fossil fuel use. Other options include human observation and adaptation but are not considered negative feedbacks.

1. What is a major possible negative feedback for the climate system?
Select one:
a. Die off of Amazon rainforest
b. Loss of Arctic ice in the summer and the resultant drop in albedo
c. Humans observe what is happening to climate and use their brains to determine ways to
remediate the change
d. Burning fossil fuels causes release of greenhouse gases that cause warming, causing more
people to burn more fossil fuels for air conditioning
e. Humans adapting to climate change