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AP Environmental Science Practice Quiz: Aquatic Biomes

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

Test your understanding with short quizzes. This quiz has 10 questions to check your progress.

Question 1 of 10

According to the provided text, what is a primary ecosystem service provided by freshwater biomes such as lakes and rivers?

All Questions (10)

According to the provided text, what is a primary ecosystem service provided by freshwater biomes such as lakes and rivers?

A) Large-scale oxygen production

B) Absorption of atmospheric carbon dioxide

C) A vital source of drinking water

D) Regulation of global salinity levels

Correct Answer: C

The text explicitly states, 'These freshwater biomes are a vital resource for drinking water.' The other options describe functions of marine biomes or are not mentioned.

Based on the information given, what are two significant environmental contributions of algae found in marine biomes?

A) Providing drinking water and regulating turbidity

B) Supplying a large portion of Earth's oxygen and absorbing atmospheric carbon dioxide

C) Forming coral reefs and creating marshland habitats

D) Controlling fish distribution and increasing nutrient availability

Correct Answer: B

The text states, 'Algae in marine biomes supply a large portion of the Earth's oxygen, and also take in carbon dioxide from the atmosphere.' This directly matches option B.

Which of the following lists contains only examples of marine biomes as described in the text?

A) Oceans, rivers, lakes

B) Coral reefs, estuaries, ponds

C) Marshland, oceans, coral reefs

D) Streams, rivers, estuaries

Correct Answer: C

The text identifies oceans, coral reefs, marshland, and estuaries as marine biomes. Options A, B, and D incorrectly include freshwater biomes (rivers, lakes, ponds, streams).

A scientist is studying why a certain species of fish is found in one part of the ocean but not another. Based on the provided information, which of the following factors would be most relevant to their investigation?

A) The amount of available drinking water

B) The concentration of atmospheric oxygen

C) The local water temperature and salinity

D) The proximity of nearby streams and rivers

Correct Answer: C

The text states that the distribution of fish varies because of 'salinity, depth, turbidity, nutrient availability, and temperature.' Therefore, investigating water temperature and salinity would be directly relevant.

The global distribution of nonmineral marine resources is influenced by all of the following factors EXCEPT:

A) Turbidity

B) Nutrient availability

C) Classification as a drinking water source

D) Temperature

Correct Answer: C

The text lists salinity, depth, turbidity, nutrient availability, and temperature as factors affecting the distribution of marine resources. Being a drinking water source is a characteristic of freshwater biomes, not a factor listed for marine resource distribution.

Which statement best distinguishes a key environmental role of marine biomes from that of freshwater biomes as described in the text?

A) Marine biomes provide drinking water, while freshwater biomes regulate atmospheric gases.

B) Marine biomes are defined by high turbidity, while freshwater biomes are defined by high nutrient availability.

C) Marine biomes play a major role in global oxygen production, while freshwater biomes are a critical source of drinking water.

D) Marine biomes include rivers and streams, while freshwater biomes include oceans and estuaries.

Correct Answer: C

The text directly contrasts the key services mentioned for each biome type: marine biomes for oxygen/CO2 regulation via algae, and freshwater biomes for drinking water. Option A reverses the roles. Option B lists factors but not the primary roles described. Option D incorrectly categorizes the biomes.

Based on the provided examples, an estuary would be classified as which type of aquatic biome?

A) A freshwater biome

B) A marine biome

C) A terrestrial biome

D) A biome that includes streams and rivers

Correct Answer: B

The text explicitly states, 'Marine biomes include oceans, coral reefs, marshland, and estuaries.'

How do marine biomes contribute to the regulation of the global carbon cycle, according to the passage?

A) By serving as a vital resource for drinking water.

B) By varying in physical factors like depth and temperature.

C) Through the absorption of atmospheric carbon dioxide by algae.

D) By supporting diverse populations of nonmineral resources like fish.

Correct Answer: C

The text directly links marine biomes to the carbon cycle by stating that algae 'take in carbon dioxide from the atmosphere.' The other options describe different, unrelated aspects of aquatic biomes mentioned in the text.

A fisheries manager wants to create a model to predict the most likely locations of a specific fish population. According to the text, which set of data would be most useful for this task?

A) Data on global oxygen and carbon dioxide levels

B) Data on the locations of major rivers and lakes

C) Data on ocean temperature, depth, and nutrient availability

D) Data on the volume of drinking water consumed by nearby populations

Correct Answer: C

This is an application of the text's fourth point. The text states that fish distribution depends on factors like 'salinity, depth, turbidity, nutrient availability, and temperature.' Therefore, data on these ocean characteristics would be the most useful for prediction.

Which of the following statements is best supported by the provided information about aquatic biomes?

A) All aquatic biomes are primary sources of drinking water for human populations.

B) The physical and chemical characteristics of a marine biome, such as salinity and temperature, influence the distribution of its living resources.

C) Algae are only found in marine biomes and are the sole source of atmospheric oxygen.

D) Freshwater biomes like streams and rivers are characterized by high turbidity and nutrient availability.

Correct Answer: B

The text explicitly states that the distribution of marine resources like fish varies due to factors including salinity and temperature. This makes statement B directly supported. Statement A is incorrect because only freshwater biomes are mentioned as a source of drinking water. Statement C makes an unsupported claim ('sole source'). Statement D makes a claim about freshwater characteristics (turbidity, nutrients) that the text only applies to the distribution of marine resources.