BI-1948
Energy flow in ecosystems
Biology · Secondary 4 · Medium · Energy flow in ecosystems
In a pond ecosystem, algae contain 5000 kJ of chemical energy. Small fish feed on the algae, and herons feed on the small fish. Assuming 10% energy transfer at each trophic level, how much energy do the herons receive from the small fish?
- 50 kJ
- 500 kJ
- 5 kJ
- 250 kJ
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