If you teach a man to fish, he will never go hungry—or he will overfish and permanently damage the ecosystem? Address the traditional biomes as well as the human-included ecosystems and contrasts the biotic and abiotic factors in each....

[Free Registration/Login may be required to access all resource tools.] Earth's biosphere is introduced to demonstrate what the Gaia Theory does for the environment. Students will also understand what homeostasis is.

This tutorial will investigate the levels of organization from the atom to the biosphere.

[Free Registration/Login may be required to access all resource tools.] Discover the hierarchal system found in the biosphere which helps scientists break down and delve into different aspects of ecology.

A comprehensive ecology learning module where students assess the dependence of all organisms on one another and the flow of energy and matter within their ecosystems.

[Free Registration/Login may be required to access all resource tools.] Like water and carbon, nitrogen is also repeatedly recycled through the biosphere. This process is called the nitrogen cycle. Learn more about the nitrogen cycle in...

[Free Registration/Login may be required to access all resource tools.] This lesson explains the levels of organization within the biological world. It looks at the cell to organism hierarchy, and at the population to biosphere...

[Free Registration/Login may be required to access all resource tools.] Ecosystems are organized into several different levels, and they can be studied at any one of the various levels of organization. Learn more about levels of...