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bdiddydog bdiddydog
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6 years ago
What is the main idea of paragraph 6?
 
  a. Biodiversity is unrelated to elemental cycles.
  b. Encouraging a variety of plants and microbes is necessary to maintain soil fertility.
  c. Increasing soil fertility depletes biomass production.
  d. Maintaining soil fertility does not help the planet as a whole support life.
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jianhong9991jianhong9991
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6 years ago
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bdiddydog Author
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6 years ago
You are the best
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