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Home Q & A Board Biology-Related Homework Help Environmental and Conservation Biology
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mcke mcke
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6 years ago
Which of the following have contributed most to the increase in atmospheric carbon dioxide levels over the past 250 years?
 
  A) Deforestation and combustion of fossil fuels
  B) Volcanic eruptions and widespread forest fires
  C) The thawing of permafrost and habitat alteration for agriculture
  D) Deforestation and ocean acidification
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A Changing Planet

A Changing Planet


Edition: 1st
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beats51beats51
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6 years ago
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mcke Author
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6 years ago
Thanks for your help!!
Katey_maree
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Yesterday
I appreciate what you did here, answered it right Smiling Face with Open Mouth
GeorgeNeist
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2 hours ago
Good timing, thanks!
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