Multiple choice

Which of the following is a non-biodegradable substance?

  1. DDT

  2. Manure

  3. Paper

  4. Cotton cloth
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

DDT is a synthetic pesticide that cannot be broken down by natural processes - it persists in the environment and accumulates in food chains. Manure (animal waste), paper, and cotton cloth are all natural materials that microorganisms can decompose relatively quickly.

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