BI-1975
Energy flow in ecosystems
Biology · Secondary 4 · Hard · Energy flow in ecosystems
A food chain in a grassland is: grass → grasshopper → frog → snake. Which statement is a correct reason why a pyramid of energy is more useful than a pyramid of biomass for this food chain?
- It shows the amount of energy transferred between each trophic level over a period of time.
- It shows the exact number of organisms at each trophic level at one moment.
- It always has the same shape as a pyramid of numbers for the same food chain.
- It does not require any measurements; it is based only on observations.
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