Global Warming Big Book Gr. 5-8

Get a well-rounded look at the causes, effects, and reduction of Global Warming with our 3-book BUNDLE. Start by providing insight into the science of our atmosphere with Global Warming: Causes. Create your own model of the carbon cycle. See firsthand how nitrogen-fixing bacteria can replace nitrogen fertilizers. Next, understand the Effects of Global Warming on the environment and human life. Obs...