IB ESS Unit 2: Ecosystems & Ecology (id: 00ad7e2e7)

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]
Figure: Energy flow in an ecz*mg nhs+wnr+);3 oaeosystemavq v/: r8byk6


The Figure shows the flow of energy per unit area per year in arbitrary units. Gross production is the total kJ obtained through photosynthesis, and net production is the kJ remaining after respiration.
Calculate the percentage of net production (kJ after respiration) that is lost to decomposers by primary consumers.

A. 100%
B. 75%
C. 50%
D. 25%


参考答案:  B


本题详细解析:
The primary consumers lose 1200 kJ out of 1600 kJ to decomposers, which translat )j /ld j9dc:hc7gi jnpd6b(g5es djgci5gb ) p(j/n:jh dcl79 6dto 75%

微信扫一扫，分享更方便