Lesson 8. Ecological Factors and Concepts. Objectives

American black bears

 American black bear (Ursus americanus).
Credit: Valerie, Flickr.com.

 

When we try to pick out anything by itself, we find it hitched to everything else in the universe.  —John Muir

 

Objectives

  • Discuss ecosystems, food webs, and the flow of energy through an ecosystem
  • Explain ecological succession

Consider the flow of energy through the system to determine what food sources a species needs to survive.