Discuss several natural factors that influence Earth’s climate, and describe climate feedbacks, using examples. List the key lines of evidence for present global climate change and summarize the...

Discuss several natural factors that influence Earth’s climate, and describe climate feedbacks, using examples. List the key lines of evidence for present global climate change and summarize the scientific evidence for anthropogenic forcing of climate.

Describe the change in atmospheric CO2 over the past 800,000 years. What is the Keeling Curve? Where do its measurements put us today in relation to the past 50 years?