• Pictures of Mount St. Helens before and after the eruption in 1980. (from Volcano World)
• Before the eruption
• After the eruption
• Plants and animals , before and after
• EPA Environmental Kids Club - Do your part to clean up our environment.  Lots of activities from the U.S. Environmental Protection Agency.
• The ABCs of Superfund - 26 ways to help our environment
• Water Purification - Learn how the water plant cleans our drinking water.
• Kaboose: Earth Day - Lots of activities to celebrate Earth Day (April 22)

FOOD CHAINS AND FOOD WEBS

• The Web of Life - An animated story about food chains, told by a spider.  From KidsPlanet (Defenders of Wildlife).

• The Food Chain from Planet Pals

• Food Webs: Kids’ Web (See if you can figure out which organisms are producers, consumers, or high-level consumers)

• The Food Chain: In the Sea and on Land
     

BIOMES OF THE EARTH

• Biomes - from NASA's Classroom of the Future.  Learn about the different biomes of the earth (rainforest, desert, savanna, etc.)
• Biomes - Habitats - from Enchanted Learning
• NASA's Earth Observatory - Biomes - 
• Cyberzoo's Key to the Biomes - Learn what animals live in each biome, with pictures and information from the Cyberzoo.
 

• Bagheera: In the Wild - Learn about vanishing and extinct animals
• Endangered! Exploring a World at Risk -  An online exhibition from the American Museum of Natural History