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Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
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hockeyguy9 hockeyguy9
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6 years ago
An important role played by humus in the soil is:
 a. as a catalyst in chemical reactions by which plants extract nutrients from the soil.
  b. as an improver of soil structure and water retention.
  c. as a source of food for microscopic soil organisms.
  d. all of these
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danielmata99danielmata99
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#1
6 years ago
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hockeyguy9 Author
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6 years ago
Smart ... Thanks!
rileyjones420
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Yesterday
This calls for a celebration Person Raising Both Hands in Celebration
gmiannotti
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2 hours ago
Thank you, thank you, thank you!
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