How does weather affect Earth? Learners understand the characteristics of water and make predictions about weather patterns. They recognize how water and weather affect rocks and minerals through erosion. They also learn about fossils...

Are spiders related to crabs? Study the order of arthropods with a reading selection about animal diversity. It provides details about each class within the order, as well as vivid pictures and explanatory charts. 

Snakes live in many different habitats. Read about how they help humans, the threats they face, and what you can do to protect them. Includes audio narration in English and Spanish with text in English.

From Chapter 9 of a textbook on physical geography that covers the biosphere. Important vocabulary is highlighted and linked to a glossary. It explains the characteristics of a biome, and describes the features of the eight different...

Learn about land biomes and their ecology.

Learn how the biomes of the world are determined by their climate and ecosystem.

Learn about ocean systems and habitats. Lots of reading, writing, games, and interactive activities. Colorful and fun.