CA State Standards addressed:
Ecology
  1. Stability in the ecosystem is a balance between competing effects. As a basis for understanding this concept:
    1. Students know biodiversity is the sum total of different kinds of organisms and is affected by alterations of habitats
    2. Students know how to analyze changes in an ecosystem resulting from changes in climate, human activity, introduction of nonnative species, or changes in population size.
    3. Students know how fluctuations in population size in an ecosystem are determined by the relative rates of birth, immigration, emigration, and death
    4. Students know how water, carbon, and nitrogen cycle between abiotic resources and organic matter in the ecosystem and how oxygen cycles through photosynthesis and respiration
    5. Students know a vital part of an ecosystem is the stability of its producers and decomposers
Students know at each link in a food web some energy is stored in newly made structures but much energy is dissipated into the environment as heat. This dissipation may be represented in an energy pyramid.
Notes:

1. Biomes      
2. Climate    
3.Ecological Interactions/Ecosystems    
4. Populations     
5. BioGeochemical Cycles