environment easy MCQ

Which of the following is considered a completely biodegradable waste material?

  1. Plastic bottles
  2. Glass shards
  3. Cow dung
  4. Aluminium cans

Answer: Cow dung

Organic matter like cow dung is readily broken down by microorganisms into simpler, non-toxic substances.

Topic Miscellaneous Environment
Exam Relevance SSC, Railway
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