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Guido Guido
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7 years ago
Why is the concentration of carbon dioxide rapidly increasing in Earth's atmosphere?
A) Earth is warming.
B) More photosynthesis is occurring.
C) The ozone layer has become much thinner.
D) Many human activities release carbon dioxide.
E) The oceans are cooling.
Textbook 
Biology: Life on Earth

Biology: Life on Earth


Edition: 10th
Authors:
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kont24kont24
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7 years ago
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