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Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
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salsathief salsathief
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6 years ago
One of the reasons that free oxygen in our atmosphere is important to the development and maintenance of life on Earth is because oxygen ________.
 
  A) combines with iron in volcanic rocks
  B) can form ozone and block some UV radiation
  C) is necessary for photosynthesis to occur
  D) reduces atmospheric temperature
  E) was very abundant in Earth's early atmosphere
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HadajahpopeHadajahpope
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6 years ago
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salsathief Author
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6 years ago
Thank you, thank you, thank you!
riptide
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Yesterday
Thanks
lipop
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2 hours ago
Good timing, thanks!
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