The source of this energy is decayed organic waste.
A. Thermal energy.
B. Hydroelectric power.
C. Firewood.
D. Biogas.
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Answer:
D. Biogas
Explanation:
- Biogas is a type of biofuel that is naturely produced from the decomposition of organic waste . When organic matter, such as food scraps and animal waste, break down in an anaerobic environment they release a blend of gases primarily methane and carbon dioxide
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