How scientists learn about past global temperatures and climates..DOC

How scientists learn about past global temperatures and climates.

Write a 525- to 700-word essay about climate change; including the following information:

·         How scientists learn about past global temperatures and climates.

·         The greenhouse effect: What it is and what happens in the process.

·         Greenhouse gases and their role in current climate change.

·         One piece of data scientists offer to show that the climate is changing globally (see the NASA website: http://climate.nasa.gov/evidence/ ).

·         Expected impacts of climate change in your area (this EPA website is very helpful: www3.epa.gov/climatechange/impacts/).

·         Cite two or more outside sources for the information you present.

 
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