BI-1976
Energy flow in ecosystems
Biology · Secondary 4 · Medium · Energy flow in ecosystems
In any ecosystem, a pyramid of energy is always upright.
Which statement best explains why a pyramid of energy cannot be inverted?
Which statement best explains why a pyramid of energy cannot be inverted?
- Energy is lost as heat and in waste at each trophic level, so less energy reaches higher levels.
- Energy is created at each trophic level, so higher levels always gain extra energy.
- Energy is recycled completely, so each trophic level has exactly the same energy.
- Producers contain the least energy because they do not respire or grow.
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