Question 39 .

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Question 39 .
Which of the following does NOT add carbon dioxide to the atmosphere?
Answer
A.forest fires
B.decomposers
C.burning of fossil fuels
D.photosynthesis
E.all of these add carbon dioxide to the atmosphe

以下哪项不增加了大气中的二氧化碳?
答案
答：
A森林火灾
B .微生物分解
C .化石燃料的燃烧
D .光合作用
E所有这些都增加二氧化碳
选C 光合作用

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