Question

City garbage can be used to produce

• A. sewage sludge
• B. useful articles
• C. biogas and maure
• D. All the above.

Answer 1

Answer: (C)

biogas and maure

• City garbage can be decomposed to form biogas and manure as it contains raw materials that can be degraded by the action of microorganisms.
• The microorganisms or decomposers convert the organic substances into simpler inorganic substances and in this process of decomposition biogas is formed.
• Biogas can be used for cooking purpose and is a great alternative for fossil fuels because biogas doesn't cause pollution.
• The nutrient-rich manure is used in agriculture to enhance the growth of crops and plants.

So, the correct answer is 'biogas and manure'.