Question 1

Which of the following best describes nonpoint source pollution?

Accepted Answer

Pollution that comes from multiple, diffuse sources.

Question 2

Which of the following is NOT a defining characteristic of wetlands?

Accepted Answer

Wildlife

Question 3

Which zone of a lake is known for high light penetration and supports photosynthesis?

Accepted Answer

Littoral zone

Question 4

Which of the following is a characteristic of oligotrophic lakes?

Accepted Answer

Clear water with low productivity

Question 5

What is a significant human impact on lake ecosystems?

Accepted Answer

Invasive species introduction

Question 6

What is a watershed?

Accepted Answer

An area of land that drains into a particular drainage basin.

Question 7

Why are aquatic ecosystems important for terrestrial food webs?

Accepted Answer

They are intimately linked, with energy and nutrients moving between them.

Question 8

Which process describes the increase of nutrients in a lake, often leading to algal blooms and oxygen depletion?

Accepted Answer

Eutrophication

Question 9

What role do decomposers play in aquatic ecosystems?

Accepted Answer

They break down dead organic matter and recycle nutrients.

Question 10

Which of the following is a major threat to stream ecosystems?

Accepted Answer

Nonpoint source pollution

Question 11

Which of the following best describes an estuary?

Accepted Answer

A coastal area where freshwater meets saltwater.

Question 12

Why do colder waters generally hold more dissolved oxygen (DO) than warmer waters?

Accepted Answer

Oxygen is less likely to escape from colder water due to lower kinetic energy.

Question 13

Which of the following is a key ecosystem service provided by ocean currents?

Accepted Answer

They distribute heat and nutrients globally.

Question 14

A lake with murky water, high nutrient levels, and frequent algal blooms is most likely:

Accepted Answer

Eutrophic

Question 15

Which of the following is a primary function of riparian zones in stream ecosystems?

Accepted Answer

They filter pollutants and provide habitat for wildlife.

Question 16

If a wetland is converted to agricultural land, which ecosystem service is most likely to be lost?

Accepted Answer

Flood control

Question 17

Which equation best represents the relationship between temperature and dissolved oxygen in water?

Accepted Answer

$$DO = k - mT$$

Question 18

A city is experiencing increased flooding after draining a nearby wetland for development. Which wetland function was most likely lost?

Accepted Answer

Flood control

Question 19

Which of the following is a direct consequence of eutrophication in lakes?

Accepted Answer

Decreased water clarity

Question 20

Which of the following aquatic habitats is most likely to act as a 'super habitat' due to its physical, biological, and chemical interconnectedness?

Accepted Answer

A coastal area with beaches, salt marshes, seagrass beds, and coral reefs

Aquatic Environments: Structure, Function, and Human Impacts

Study Guide - Practice Questions