2.+ecosystems

**Ecosystems**: Tentative Test Date MC w/FRQ (A) 10/22/12 or (B) 10/23/12: Biotic and abiotic factors contribute to the characteristics of an ecosystem. Organism’s range is limited to the ability to exploit a habitat and compete for or share resources. Trophic levels and food chains describe how energy moves through an ecosystem. Only a fraction of the energy in one trophic level is transferred to the next level. (pp. 39-63)

Study Guide:

Lecture Video: media type="custom" key="21063174" Videos: