This document answers some of the most commonly asked questions about climate change,including whether the earth has warned,which human activities are contributing to climate change,what further climatic changes are expected to occur,and what effects these changes maye have on humans and the environment.First,however,several issues are clarified:what the earth's climate is,how climate differs from weather,and what processes influence climate.

This document answers some of the most commonly asked questions about climate change,including whether the earth has warned,which human activities are contributing to climate change,what further climatic changes are expected to occur,and what effects these changes maye have on humans and the environment.First,however,several issues are clarified:what the earth's climate is,how climate differs from weather,and what processes influence climate.