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AP Environmental Science Practice Quiz: Impacts of Overfishing

Written by AP Content Team, Verified for 2026 AP Exams, Last updated: May 2026

Test your understanding with short quizzes. This quiz has 7 questions to check your progress.

Question 1 of 7

According to the provided text, what is a primary consequence of overfishing?

All Questions (7)

According to the provided text, what is a primary consequence of overfishing?

A) An increase in the overall number of aquatic species.

B) The extreme scarcity of some fish species.

C) A decrease in the commercial demand for fish.

D) The improvement of marine water quality.

Correct Answer: B

The text explicitly states that 'Overfishing has led to the extreme scarcity of some fish species,' identifying this as a key problem.

Based on the passage, the scarcity of certain fish species due to overfishing directly leads to which ecological problem?

A) An increase in ocean temperatures.

B) The spread of invasive aquatic plants.

C) A reduction in biodiversity within aquatic systems.

D) The acceleration of coastal erosion.

Correct Answer: C

The text directly links the scarcity of fish species to a specific ecological consequence: it 'can lessen biodiversity in aquatic systems.'

Which of the following best describes a socioeconomic impact of overfishing as detailed in the text?

A) It forces governments to invest in new fishing technologies.

B) It harms communities that rely on fishing for income and food.

C) It leads to an increase in recreational boating activities.

D) It encourages international cooperation on ocean preservation.

Correct Answer: B

The text states that the scarcity of fish can 'harm people who depend on fishing for food and commerce,' which directly addresses the socioeconomic impact on dependent communities.

The passage suggests a cause-and-effect relationship where overfishing results in both...

A) increased species abundance and economic growth.

B) reduced aquatic biodiversity and economic hardship for fishing communities.

C) improved food security and greater ecosystem stability.

D) cleaner aquatic systems and new opportunities for commerce.

Correct Answer: B

The text outlines two main consequences of overfishing: an ecological one ('lessen biodiversity') and a human-centric one ('harm people who depend on fishing for food and commerce'). This option correctly combines both.

The phrase 'lessen biodiversity' in the context of overfishing implies which of the following?

A) The total weight of all fish in the ocean decreases.

B) The number of different types of species in an area is reduced.

C) Fish are migrating to new, previously uninhabited areas.

D) The remaining fish species grow to larger sizes.

Correct Answer: B

Biodiversity refers to the variety of life in a particular habitat or ecosystem. Lessening biodiversity means there is a reduction in the number of different species, which is a direct result of some species becoming extremely scarce.

A coastal town's economy is almost entirely dependent on its commercial fishing fleet. According to the text, how would overfishing most likely affect this town?

A) The town would experience economic prosperity due to higher prices for scarce fish.

B) The town's fishing fleet would be forced to find new, more abundant species to catch.

C) The town's economy would be harmed as the scarcity of fish impacts commerce.

D) The town would see an increase in tourism as a result of clearer waters.

Correct Answer: C

This is an application of the text's principles. The text states overfishing can 'harm people who depend on fishing for... commerce.' A town dependent on commercial fishing would therefore suffer economic harm from the scarcity of fish.

Which of the following groups is explicitly identified in the text as being negatively impacted by overfishing?

A) Marine biologists and researchers.

B) Government regulatory agencies.

C) People reliant on fishing for their livelihood.

D) Consumers who purchase fish at supermarkets.

Correct Answer: C

The text specifically mentions that overfishing can 'harm people who depend on fishing for food and commerce,' which collectively refers to those whose livelihood is tied to fishing.