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 simplified -l 9 m1pces:zgvl4/ 2,gfgumw (by/ov0rp 6ng model of 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 burnt and release large quantities ofbuj9ufx )b ptw,lz*x oaia d0b,(x ,y:k0+h1 r carbon dioxide into the atmosphere, leading to global warming. Respiration also releases carbon dioxidbjua0rxk:yh1to , ax f+wi,lb,zu b*x(dp9 )0 e 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.
| 
