Text and illustrations, diagrams, tables and charts present informatioon on such topics as surface features of Earth, weather and climate, natural resources, and environmental problems.
Investigates the world of rocks and minerals, covering such topics as the earth's crust, the identification of minerals, and how rocks are changed by heat and pressure.
Text and illustrations, diagrams, tables, and charts present information on such topics as surface features of Earth, weather and climate, natural resources, and environmental problems.