BI-1947
Energy flow in ecosystems
Biology · Secondary 4 · Medium · Energy flow in ecosystems
In a simple food chain, grass → grasshopper → frog → snake, only about 10% of the energy is passed from one trophic level to the next. If the grass stores 20 000 kJ of energy, approximately how much energy is available to the frogs?
- 200 kJ
- 2 000 kJ
- 20 kJ
- 200 000 kJ
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