I need answers for these four questions. What evidence is there that the use of fossil fuels, which produce carbon dioxide, is causing climate change?

Describe how computer climate models help scientists understand possible future climate changes. How reliable are these computer models in making predictions about global warming? Discuss any limitations in these models.

What can you do? Read up on the issue and discover ways you can reduce the human “carbon footprint” on the planet. Include four examples of what can be done in homes and in the community. Cite your sources.

Many people believe that if the human race continues to use energy as we are now, without change, we’ll witness a significant worldwide environmental impact in this century. Research this topic and discuss this possibility. Include concrete examples of specific environmental consequences of global warming.