Name :_____________________________________________Period:_______Date:____
Keystone : Ecology Topics
1.) B.4.2.1 : Describe the flow of energy in an ecosystem.
a. Describe a food chain
b. Describe a food web
c. Describe and energy pyramid
2.) B.4.2.2 : Describe biotic interactions in an ecosystem.
a. Describe competition
b. Describe predation
c. Describe symbiosis
d. Describe mutualism
e. Describe commensalism
f. Describe parasitism
3.) B4.2.3 Explain how matter is recycled in an ecosystem; the biochemical cycles
a. Explain the water cycle
b. Explain the carbon cycle
c. Explain the oxygen cycle
d. Explain the nitrogen cycle
4.) B.4.2.4 Describe how ecosystems change in response to natural and human disturbances.
a. Climate change
b. Non-native species
c. Pollution
d. Fires
5.) Define the following key words:
Trophic level decomposer Endemic Species
Terrestrial community
Succession Producer
Abiotic Ecosystem