symbiosis	competition	evolution	fitness
food chain	food pyramid	trophic level	niche
primary producer	primary consumer	secondary consumer	ecology
biome	autotrophes	mutation	heterotrophes

Concepts - understand the big picture

How does "survival of the fittest" contribute to change in life forms? Why are predators necessary in an ecological community? What kinds of life forms form the base of a food pyramid? What happens to the energy as it is passed up the food pyramid? What limits the number and size of top predators in a community? How do niches develop in living communities? Facts -- get the details right What is the primary energy source in a near-shore community? What  is the primary energy source in a benthic community? What determines if a mutation will become common in a community? What is the role of detritovores in a community? Give an example of cooperation between different species of life forms. Picture It! Draw a picture of an aquatic environment with life forms. Draw a simple food pyramid with three trophic levels for this environment. Directions for Drawing Program.

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