IGCSE O Level Biology MCQs - Chapter 7
Effects of Human Activity on Ecosystem Multiple Choice Questions (MCQ) PDF - 18
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The Trivia Quiz: Dead algae and plants are decomposed by;; "Effects of Human Activity on Ecosystem" App APK Download (Free) with answers ‘fungi’, ‘bacteria’, ‘virus’ and ‘detritivores’ to study online courses. Practice Biology Practice Test Quiz Questions, download Kindle eBook (Free Sample) for online degree programs.
Effects of Human Activity on Ecosystem Questions & Answers PDF Download: MCQ Quiz 18
MCQ 86: Dead algae and plants are decomposed by
- bacteria
- fungi
- virus
- detritivores
MCQ 87: In ecosystem ,Silting means
- trees do not retain water
- eroded soil gets deposited in rivers and streams
- water levels rise rapidly in rivers
- all of above
MCQ 88: Acidic waste products can be made less harmful if treated with
- water
- alkalis
- base
- sulphuric acid
MCQ 89: The word BOD refers to the
- Bidding of Dermatology
- Binding of Dirt
- Biochemical occupied Date
- Biochemical Oxygen demand
MCQ 90: Conserving metals may decrease
- environmental pollution only
- waste disposal only
- minerals in the crust
- environmental pollution and waste disposal
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