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O Level Biology Cerification Guide: Certification Test 841

Atmospheric Pollution Notes App & e-Book: MCQ 841

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MCQ: 841

Nitrates (NO3-1) and phosphates (PO4-3) reach underground water with

  1. acid rains
  2. fertilizers washed away by rain water
  3. decomposition of organic compounds by anaerobic bacteria
  4. decomposition of organic compounds by aerobic bacteria
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Atmospheric Pollution Cerification Guide: O Level Biology App & eBook Notes

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