Geography 4 kids
Geography4 kids.com: Biosphere: Ecosystems
Ecosystems is an excellent resource for understanding what an ecosystem is and goes on to explain the types of ecosystems, known as biomes. Check out the wonderful panoramic photographs of different biomes.
Nature Conservancy
The Nature Conservancy: Nature Lab
These wonderful virtual field trips allow students to explore a coastal rain forest or the coral reefs in the Dominican Republic, and so much more.
Other
My Science Box: Ecosystem Organization
In this lesson, students will learn about the different levels in the hierarchy of ecology and explain the relationships: organism, population, community, ecosystem, biome, and biosphere. They will also discover why different regions...
The Franklin Institute
Franklin Institute: Ecosystems, Biomes, and Habitats
This site is provided for by The Franklin Institute Online. "Open the door and step into your ecosystem." Content describes ecosystems and related material such as biomes, habitats, energy cycle, extinction, recycling, and more.