本题目来源于试卷: IB ESS Unit 2: Ecosystems & Ecology，类别为 IB环境系统与社会
[单选题]
Identify the statements thabe0n3 dm ymrdl2g, s9zk*/ld2t arotq,p66l tslz (rd/n,e true.
I. Living organisms release energy from organic compounds and convert it to heat during the process of respiration.
II. Since heat cannot be transformed into other forms of energy it is lost from ecosystems.
III. Light energy from the sun is converted to chemical energy by producers and then converted to heat during respiration.
A. I only
B. I and II
C. I and III
D. I, II and III
参考答案: D
本题详细解析:
All the statements above are true. In most ecosystems, light jyx8 88pji2 +wgqskt 6energy from the sun is captured by producers via photosynthesis and transferred to consumers through feeding. As organisms respire, they lose i6kgx+ pwj2jq 888ty senergy in the form of heat which cannot be reused by organisms. There is a constant input of energy from the sun.
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