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Type: Multiple-Choice
Category: Biogeochemical Cycles
Level: Grade 7
Author: boogiebearsmommy
Last Modified: 3 years ago

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Biogeochemical Cycles Question

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Grade 7 Biogeochemical Cycles

Lightning and soil bacteria are both involved in the production of                  .
  1. nitrates
  2. potassium
  3. phosphates
  4. none of the above