College-level online course highlighting the fundamentals of ecology. Course topics include coevolution of the biosphere, geosphere, atmosphere, and hydrosphere; photosynthesis and respiration; and the carbon, nitrogen, and water cycles....

This activity helps students understand how predator-prey interactions affect population sizes and how competitive interactions affect population sizes. They will also explore the major factors that influence the predator-prey relationship.

[Free Registration/Login may be required to access all resource tools.] Covers interactions between organisms.