McGraw Hill
Arthropods
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.
Cornell University
Field Day: Be an IPM Detective
Become a pest detective! Individually or in small groups, scholars scout the land to discover which pests—plant and animal—inhabit it, determine whether the pests are endangering the environment, and summarize their findings.
Encyclopedia of Earth
Encyclopedia of Earth: Biodiversity
A large collection of articles, news items, photos, slideshows, animations, and scientific reports, all related to biodiversity. Many articles on different ecosystems, e.g., deserts, grasslands, forests, etc. An excellent resource for...