IGCSE O Level Biology MCQs - Chapter 7

Effects of Human Activity on Ecosystem Multiple Choice Questions (MCQ) PDF - 4

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Effects of Human Activity on Ecosystem Questions & Answers PDF Download: MCQ Quiz 4

MCQ 16: Arsenic is an example of

A) organic waste

B) inorganic waste

C) acid

D) base

MCQ 17: If the trees are cleared, annual rain fall

A) increases causing flood

B) decreases and the area becomes dry

C) decreases but increases moisture

D) increases but decreases moisture

MCQ 18: Advantages of using pesticides include

A) healthier crops

B) better yield

C) more food and profit for farmers

D) all of above

MCQ 19: Conservation of resources can be tackled through

A) human population control only

B) by reducing pollution only

C) increasing use of resources

D) human population control and by reducing pollution

MCQ 20: In Ecosystem pyrethrum is used in

A) insecticides

B) quinine

C) morphine

D) antibiotics

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