A) greater than the productivity at the first trophic level.
B) less than the productivity at the first trophic level.
C) equal to the productivity at the first trophic level.
D) extremely variable compared to the productivity at the first trophic level.
Correct Answer: B
Solution :
[b] According to the 10% law, at each trophic level, only 10% of the energy received is transferred to the next trophic level. And rest of the energy is used up in biological activity and gets wasted in the environment.
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