Exam 9: Global Atmospheric Changes

The computer-generated image below depicts a part of the southern hemisphere in December 2007. What is the source of the purple-colored region on the image represent?

Describe the difference between tropospheric ozone and stratospheric ozone. Explain the significance of each for humans and other forms of life on Earth.

Distinguish between the terms "greenhouse effect" and "enhanced greenhouse effect". Include identification of four major greenhouse gases and their sources in your discussion.

List four ways in which solar radiation shapes life on Earth.

Why is the layer of stratospheric ozone so important?

________ is typical weather patterns that occur in a place over a period of years?

Which group of air pollutants tends to cool the atmosphere because they reflect more sunlight back to space thus reducing incoming solar radiation?

Explain how large forests help to mitigate global climate change.