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Type: Multiple-Choice
Category: Biogeochemical Cycles
Level: Grade 9
Score: 8
Author: shannonh1028
Last Modified: 3 years ago

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Biogeochemical Cycles Question

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Grade 9 Biogeochemical Cycles

The recycling of chemical elements throughout an ecosystem is
  1. energy.
  2. a trophic level.
  3. the phosphorus cycle.
  4. the biogeochemical cycle.
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