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Question

City garbage can be used to produce
  1. sewage sludge
  2. biogas and maure
  3. useful articles
  4. All the above.

A
All the above.
B
sewage sludge
C
useful articles
D
biogas and maure
Solution
Verified by Toppr

The correct option is 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'.

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