What are the agents that bring about such an undesirable change (pollution) are called?

What are the agents that bring about such an undesirable change (pollution) are called?

Q. What are the agents that bring about such an undesirable change (pollution) are called?

  1. Pollutants
  2. Haptens
  3. Adjuvants
  4. Vaccine

Answer: Pollutants

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