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Home Q & A Board Biology-Related Homework Help General Biology
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hmpark224 hmpark224
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6 years ago
As free oxygen increased in the early atmosphere,
  a. most anaerobic organisms perished.
  b. some anaerobic organisms survived in seafloor
  sediments.
  c. organisms evolved pathways for detoxifying
  oxygen.
  d. the amount of UV radiation reaching the earth
  decreased.
  e. all of these happened.

Question 2

The CAM pathway
  a. involves only the Calvin-Benson cycle.
  b. involves only the C4 cycle.
  c. is used by plants in humid regions.
  d. is also known as photorespiration.
  e. needs day and night for completion.
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letsdothis545letsdothis545
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6 years ago
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hmpark224 Author
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#2
6 years ago
I just wanted to write to say thanks a bunch for the answer!
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