Biosphere Study App Download | Environmental Science MCQ e-Book PDF | 83
Environmental Science MCQs (University Level) From Textbook

Environmental Science MCQs – Certification Test 83

Biosphere MCQ (Question 83) – Study App & e-Book Download

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MCQ 83: The industrial waste contains highly toxic elements such as lead, mercury, arsenic and:

  1. Cadmium
  2. Cobalt
  3. Boron
  4. Antimony

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