BI-2238
Aerobic respiration
Biology · Secondary 4 · Hard · Aerobic respiration
A gardener sets up two compost bins with equal masses of dead leaves. Bin A is well-aerated, while Bin B is sealed so that conditions become anaerobic. After 30 days, the temperature in Bin A is much higher than in Bin B. Which statement explains this difference?
- Aerobic bacteria in Bin A release more energy as heat than anaerobic bacteria in Bin B.
- Anaerobic bacteria in Bin B absorb heat from the surroundings.
- No respiration occurs in Bin B because there is no oxygen.
- Leaves in Bin A do not decompose, so they trap more heat from sunlight.
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