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Long-term use of fertilisers and pesticides destroys soil structure by killing:

AParent rock layers
BSand and gravel bits
CClay mineral grains
DSoil microorganisms
Answer & Solution
Correct answer: D. Soil microorganisms
1. Microbes recycle nutrients in soil. 2. Chemicals kill them and earthworms. 3. This is soil pollution. _Source: syllabus Science, Chapter 14, Natural Resources._
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