IGCSE O Level Biology Exam MCQs – Practice Test 20 (Chapter 7)
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The "Effects of Human Activity on Ecosystem Notes" App Download: Foul smelling gases include; MCQ with answers: ammonia (nh3), hydrogen sulfide (h2s) only, carbon dioxide (co2) only, and hydrogen sulfide (h2s) and ammonia (nh3). Practice Introduction to Biology Quiz Questions, download Kobo e-Book (Free Chapter) to improve learning outcomes.
MCQ 96: People may become blind due to:
MCQ 97: Foul smelling gases include:
MCQ 98: Volcanic eruptions, biological decay and forest fires releases:
MCQ 99: Aluminum (Al) salts may become fatal to fish if allowed to react with:
MCQ 100: Fish die as a result of water pollution due to:
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