Cambridge IGCSE · Biology (0610)

Pollution: Practice Questions

5 multiple-choice questions marked as you go, and 5 written questions with worked solutions. All on Pollution.

10 questions27 marksFree, no account

Question 1

1 mark

What is an immediate ecological effect of excess nitrates and phosphates from agricultural runoff entering an aquatic ecosystem?

Question 2

1 mark

Methane (\(CH_4\)) is a potent pollutant. Which statement correctly identifies a major source of methane and its primary environmental effect?

Question 3

1 mark

Non-biodegradable plastics in marine environments pose a significant threat to wildlife. Which direct impact is most commonly associated with these plastics?

Question 4

1 mark

A particular aquatic ecosystem is observed to have a high concentration of nitrates and a noticeable decrease in the population of oxygen-sensitive invertebrates. This situation is most consistent with pollution from:

Question 5

1 mark

Which of the following is a major human-induced source of methane (CH ₄) contributing to air pollution?

Question 6

3 marks

Describe one specific negative impact of non-biodegradable plastic pollution on marine organisms.

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Question 7

5 marks

Propose two distinct, practical solutions to mitigate the global problem of non-biodegradable plastic pollution in both terrestrial and aquatic ecosystems, explaining the biological benefits of each solution.

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Question 8

3 marks

Outline the immediate environmental changes that occur in an aquatic ecosystem following the introduction of excess nutrients from agricultural runoff, leading towards eutrophication.

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Question 9

4 marks

State two common greenhouse gases that contribute to air pollution and explain their collective effect on the global climate.

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Question 10

7 marks

Discuss the environmental impacts of both untreated sewage and non-biodegradable plastics in marine ecosystems. Compare and contrast their primary effects on marine life and the environment.

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