BI-1939
Energy flow in ecosystems
Biology · Secondary 4 · Medium · Energy flow in ecosystems
A farmer can use the same field either to grow maize for direct human consumption or to grow maize to feed cattle for beef. Why can the field usually feed more people if maize is eaten directly by humans?
- Cattle can convert all the energy in maize into meat with no losses.
- Energy is lost between trophic levels, so less energy is available in beef than in maize.
- Maize plants do not carry out respiration, so they store no energy.
- Humans cannot digest maize but can digest beef completely.
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