Cengage Advantage Books: Sustaining the Earth 10th Edition by Tyler Miller,Scott Spoolman

Exercise 13

Distinguish between biotic and abiotic components of the biosphere, and give two examples of each. Define range of tolerance. Define limiting factor and state the limiting factor principle. What is a trophic level ? Distinguish among producers (autotrophs), consumers (heterotrophs), decomposers, and detritus feeders (detritivores), and give an example of each in an ecosystem. Distinguish among primary consumers (herbivores), carnivores, secondary consumers, tertiary consumers, and omnivores, and give an example of each. Define photosynthesis and aerobic respiration. Explain the importance of microbes.