BI-1865
Energy flow in ecosystems
Biology · Secondary 4 · Medium · Energy flow in ecosystems
In a simple food chain in a pond, algae are eaten by small fish, which are then eaten by herons. If the algae receive 20 000 kJ of light energy, approximately how much chemical energy is available to the small fish, assuming 10% energy transfer between trophic levels?
- 2000 kJ
- 200 kJ
- 10 000 kJ
- 20 000 kJ
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