Environment & Ecology · Ecosystem Dynamics
A lake shows high primary productivity but low fish biomass. The most plausible reason is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Absence of primary producers in the littoral zone
- 2High decomposition rate of organic matter only
- 3Low light penetration reducing phytoplankton growth
- 4Excessive grazing by zooplankton✓
Correct answer
Excessive grazing by zooplankton
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