BI-1953
Energy losses in food chains
Biology · Secondary 4 · Medium · Energy losses in food chains
A student sets up a food chain: lettuce → caterpillar → bird. Which option correctly applies the idea of energy loss to explain why there are fewer birds than lettuce plants?
- Most energy is lost between trophic levels, so little energy is left to support many birds.
- Birds cannot photosynthesise, so they cannot increase their own energy supply.
- Lettuce plants compete with birds for sunlight, so birds cannot grow.
- Energy is shared equally among all organisms, so each bird gets too much energy.
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