plumiPollution: CAIE IGCSE Biology questions
Every CAIE IGCSE Biology exam question on 20.3 Pollution, June 2024 and the specimen papers, with its mark scheme and examiner’s report.
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Q7(a)
The whole paper ↗
Q7(a)
The whole paper ↗![Specimen Paper 3, question 7(a): Carbon dioxide is a greenhouse gas. State the name of one other greenhouse gas. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/061003-spec-07-a-qp.webp)
All 5 questions on Pollution, as a list
- June 2024, Paper 1, Q38 (1 mark): What are the effects of sewage pollution on the biodiversity and the number of bacteria in a river? 38 biodiversity number of bacteria A decreases decreases B d
- June 2024, Paper 1, Q39 (1 mark): The increase of which gases contributes to an enhanced greenhouse effect? A carbon dioxide and methane B methane and nitrogen C nitrogen and oxygen D oxygen and
- June 2024, Paper 4, Q7(a) (6 marks): Complete Fig. 7.1. the concentration of the growth of fertilisers enter a lake increases on the surface of the lake increases blocking underwater producers die
- Specimen, Paper 2, Q38 (1 mark): The statements describe some of the events that occur during eutrophication. What is directly responsible for the increase in decomposers? A a decrease in disso
- Specimen, Paper 3, Q7(a) (1 mark): Carbon dioxide is a greenhouse gas. State the name of one other greenhouse gas. [1]
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