Analyzes the roles of microorganisms, plants, animals, and humans in the biogeochemical cycle, highlighting the ways in which humans are harming the environment and exploring what can be done to help maintain balance in the biosphere.
Presents an illustrated introduction to the Earth, describes the atmospheres of the other planets in the solar system, and explains the reasons why Earth is capable of sustaining life.
Explores the environment and inhabitants of the earth, and examines the cycle of energy and matter, freshwater biomes, deserts, grasslands, and forests, the effects of pollution on the environment, and endangered species.
Why has the base crew on the Planet of Puzzles disappeared? Your mission is to rescue the crew, using your knowledge of data handling, including tables, charts, graphs, averages, and probability.
Describes how the diversity of life on Earth is being destroyed now by human activities at a rate ten to one-hundred times faster than in the planet's history. Discusses the importance of preserving ecosystems, restoring habitats, and stopping global warming.
