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Angie constructs models of the carbon cycle, nitrogen cycle, and water cycle. What type of ecological models are these?
A. food web
B. food chain
C. biogeochemical cycles
D. geological system
Preview next quiz:
Angie constructs models of the carbon cycle, nitrogen cycle, and water cycle. What type of ecological models are these?
A. food web
B. food chain
C. biogeochemical cycles
D. geological system