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Seventh Grade (Grade 7) Biogeochemical Cycles Questions

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Grade 7 Biogeochemical Cycles
Lightning, legumes and bacteria are a part of which cycle?
  1. water cycle
  2. nitrogen cycle
  3. carbon cycle
  4. phosphorus cycle
Grade 7 Biogeochemical Cycles
Which of the following is NOT a way that carbon in dead organisms is returned to the carbon cycle?
  1. by becoming fossil fuel
  2. through combustion
  3. through decomposition
  4. through photosynthesis
Grade 7 Biogeochemical Cycles
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