Pollution Effects · Botany

Which soil pollution effect is most harmful to root growth?

  1. Increase in harmless soil air spaces only
  2. Balanced addition of compost
  3. Accumulation of toxic heavy metals
  4. Natural leaf litter decomposition
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Correct answer: Accumulation of toxic heavy metals

Heavy metals such as lead, cadmium, and mercury can inhibit root growth and disrupt enzyme activity. They may also enter food chains through contaminated crops.

Difficulty: Medium Question 17 of 20

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