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Which of the following is cycled through the environment through processes such as photosynthesis, respiration, and decay a) carbon dioxide b)oxygen c)both of these choices are correct d)neither of these
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Which of the following is cycled through the environment through processes such as photosynthesis, respiration, and decay

a) carbon dioxide
b)oxygen
c)both of these choices are correct
d)neither of these choices is correct

User Forrest Keppler
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2 Answers

2 votes
C. Plants and trees give off oxygen and collect carbon dioxide from us.
User Marc Bacvanski
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4 votes
c- plants use photosynthesis which gives off oxygen and respiration gives off carbon dioxide
User TwinHabit
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