A. Food chain
A food web also shows the flow of energy and materials through an ecosystem but in a complex web, not a single chain. A biogeochemical cycle does not deal with the flow of energy/materials through an ecosystem at all.
I Think Its True My Dude Or Dudette
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Hope this helps
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Zane
Answer:
physical
Explanation:
how thick something is is a physical trait, so it's a physical property!
