[单选题]
The figure below shows the flow of energy per area per
(a)h lqs0jt;5z* ivmpy// g+9dtamo myear in an ecosystem.
Aproximately what percentage of energy from the producers reaches the tertiary consumers?
A. 100%
B. 10%
C. 1%
D. 0.1%
参考答案:
D
本题详细解析:
Explanation:
As energy moves from producers to consumers, only about 10% is transferred to the next trophic level. So only about 0.1 % of the energy produced by the producers reaches the tertiary consumers. All other choices (Choice A, B, C) are not correct. Looking at the values in the diagram, producers start with 20 000 units of energy and tertiary consumers receive only 25 units. 25 divided by 20 000 is approximately 0.1%.
