Pollution can be controlled by

Options :
  1. sewage treatment
  2. production of electrical vehicles
  3. control of atomic blasting
  4. all the above
Answer and Explanation :-

Answer: Option 4

Explanation:

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By hook or by crook, I hope that you will possess yourselves of money enough to travel and to idle, to contemplate the future or the past of the world, to dream over books and loiter at street corners and let the line of thought dip deep into the stream
-Virginia Woolf