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Type: Multiple-Choice
Category: Biogeochemical Cycles
Level: Grade 9
Author: decalvil802
Last Modified: a month ago

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Biogeochemical Cycles Question

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Grade 9 Biogeochemical Cycles

Bacteria living in the soil and on the roots of some plants are important in the cycling of which essential element in an ecosystem?
  1. Nitrogen
  2. Carbon
  3. Phosphorus
  4. Oxygen
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