BI-2239
Aerobic respiration
Biology · Secondary 4 · Hard · Aerobic respiration
In a compost bin, aerobic bacteria break down dead leaves. The temperature inside the bin rises from 25 °C to 60 °C during the first week. Which statement best explains this temperature increase?
- Aerobic respiration by bacteria releases energy as heat, warming the compost.
- Photosynthesis by bacteria absorbs heat from the surroundings.
- Anaerobic respiration by bacteria produces ice, which cools the compost.
- Diffusion of oxygen into the compost directly produces heat energy.
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