IB ESS Unit 1 Foundations of ESS (id: e44316911)

本题目来源于试卷: IB ESS Unit 1 Foundations of ESS，类别为 IB环境系统与社会

[单选题]
Figure: A simplified5k)sinxg31 i v model of007vxc(6 u/rr s.q0wmtru kuk the carbon cycle




In the model of the carbon cycle shown in the Figure, identify the flows or processes which increase the carbon dioxide in the atmosphere.

A. Combustion and respiration
B. Photosynthesis and consumption of producers by consumers
C. Photosynthesis
D. Death and fossilization


参考答案:  A


本题详细解析:
During combustion, fossil fuels are bur/lzh5w: .vhoowmdk2i;d,zb . nt and release large quantities of carbon dioxide into the atmosphere, leading to global warming. Respiration also releases carbon dioxi .zh2w l5v bk,/zh iw.omdod:;de to the atmosphere.
Photosynthesis (Option C) takes carbon dioxide out of the atmosphere.
Consumption of herbivores by consumers (Option B) is a transfer of matter, moving organic compounds from herbivores to consumers so it does not release carbon dioxide.
Death and fossilisation (Option D) increase the storage of carbon compounds in fossil fuels.

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