Plant Ecology · Botany

In the phosphorus cycle, what is the primary reservoir for phosphorus in the environment?

  1. Atmosphere
  2. Rocks and Sediments
  3. Ocean water
  4. Terrestrial plant biomass
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Correct answer: Rocks and Sediments

Unlike the nitrogen or carbon cycles, the phosphorus cycle does not have a significant gaseous phase. Phosphorus is released from rocks through weathering and is then taken up by plants from the soil.

Difficulty: Medium Question 11 of 20

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