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Home Q & A Board Biology-Related Homework Help General Biology
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supernumerary supernumerary
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6 years ago
Most of the earth's usable carbon is in its
  a. sedimentary rocks.
  b. atmosphere.
  c. biomass.
  d. oceans.
  e. mantle

Question 2

In the United States, what fraction of fresh
  water taken from the environment is used to
  irrigate agricultural fields?
  a. 0.
  b. 20.
  c. 40.
  d. 60.
  e. 80
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leticia1977leticia1977
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6 years ago
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supernumerary Author
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#2
6 years ago
I wanna give this person a hug.
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