Question 1

Which of the following can result in lakes being vulnerable to water pollution?

Accepted Answer

When there is little water flow in lakes and there is often little vertical mixing in lakes, the water in the lakes can become stagnant and pollutants can accumulate, making them more vulnerable to water pollution. The depth of the lake is not necessarily a factor in its vulnerability to water pollution.

Question 2

Which of the following statements about underground contaminants is false?

Accepted Answer

This statement is false. Waste products do not disperse quickly in underground aquifers because of limited flow and slow movement of groundwater through underground materials. Contaminants can remain in the same area for long periods of time, sometimes leading to plumes of contaminated water.

Question 3

Which of the following statements is false?

Accepted Answer

The answer of Which of the following statements is false?
...

Question 4

Nitrates and phosphates are examples of

Accepted Answer

Nitrates and phosphates are plant nutrients, and are often found in fertilizers. They can cause excessive plant growth and algal blooms in bodies of water, leading to water quality degradation.

Question 5

Which of the following developments of cultural eutrophication would occur last?

Accepted Answer

Increase in anaerobic bacteria is the final stage of cultural eutrophication. When oxygen is depleted due to the decomposition of organic matter, anaerobic bacteria thrive and produce harmful gases such as methane and hydrogen sulfide, leading to the death of aquatic life. Fish kills (A), blooms of algae (B), increase in aerobic bacteria (C), and increase of plants such as duckweed (D) occur earlier in the process.

Question 6

About ____ of the 100,000 medium to large lakes in the U.S. a.suffer from cultural eutrophication.

Accepted Answer

One-third of the 100,000 medium to large lakes in the U.S. suffer from cultural eutrophication, which is the process where water bodies become overly enriched with nutrients, leading to excessive growth of algae and other aquatic plants.

Question 7

Assume you are vacationing by a small lake, where you intend to do some fishing. a.When you arrive at this lake, you notice a slight sulfur smell.
Which phase of cultural eutrophication does this sulfur smell indicate?

Accepted Answer

The sulfur smell is likely an indication of anaerobic bacteria decomposing the aerobic organisms in the water, which is a phase of cultural eutrophication.

Question 8

An oxygen sag curve occurs when

Accepted Answer

An oxygen sag curve occurs when the biodegradable wastes are broken down by bacteria, which lowers the available oxygen in the water for organisms with high oxygen requirements. This phenomenon is typically seen in streams or rivers downstream of wastewater treatment plants or industrial discharges. The breakdown of biodegradable wastes by bacteria is known as biochemical oxygen demand (BOD), and it is the main cause of oxygen depletion in water bodies.

Question 9

Arsenic is released into drinking water

Accepted Answer

The answer of Arsenic is released into drinking water
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Question 10

Which of the following is a nonpoint source of water pollution?

Accepted Answer

A logged forest is a nonpoint source of water pollution as it involves the runoff of sediments, nutrients, and chemicals from various activities such as logging, road building, and land clearing. Nonpoint sources are diffuse and have no specific discharge point, making them difficult to regulate and control. Sewage treatment plants, electric power plants, active and inactive coal mines, and factories are point sources of water pollution as they discharge contaminants at a specific location.

Question 11

One class of pollutants that can cause excessive growth of algae is

Accepted Answer

Plant nutrients, such as nitrogen and phosphorus, can cause excessive growth of algae in water bodies through a process called eutrophication. As a result, the oxygen levels in the water may be depleted, leading to the death of other aquatic species.

Question 12

Acids, salts, and metals are examples of

Accepted Answer

Acids, salts, and metals are all inorganic chemicals.

Question 13

Which of the following is a point source of pollution?

Accepted Answer

Oil tankers are point sources of pollution, meaning that they release pollutants from a specific location or point. Acid deposition, urban streets, suburban lawns, and parking lots are examples of non-point sources of pollution, as they release pollutants from multiple locations or diffuse sources.

Question 14

Which of the following decrease(s) photosynthesis in bodies of water?

Accepted Answer

The answer of Which of the following decrease(s) photosynthesis in...

Question 15

The practice of suspending rust particles in contaminated water, and then drawing out the rust with hand-held magnets, has been effective in dealing with

Accepted Answer

The answer of The practice of suspending rust particles in...

Question 16

All of the following are nonpoint sources of water pollution except

Accepted Answer

Offshore oil wells are point sources of water pollution because they involve a specific and isolated location where pollutants are discharged. Livestock feedlots, urban lands, croplands, and parking lots are all examples of nonpoint sources of water pollution because pollutants are not discharged from a single, easily identifiable source, but rather come from a diffuse area.

Question 17

Groundwater

Accepted Answer

The answer of Groundwater
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Question 18

Which of the following statements is false?

Accepted Answer

Inorganic nutrients such as fertilizers can lead to eutrophication and reduce dissolved oxygen levels, which can have adverse effects on aquatic ecosystems. Therefore, the statement that inorganic nutrients have no adverse effects on aquatic ecosystems is false.

Question 19

Which of the following aquatic ecosystems receives the vast majority of the global inputs of pollution?

Accepted Answer

Coastal parts of the ocean receive the vast majority of the global inputs of pollution due to human activities such as industrial and agricultural runoff, oil spills, sewage discharges, and plastic debris. Estuaries and slowly moving rivers may also receive significant pollution inputs, but not to the same extent as coastal areas of the ocean. Swiftly flowing streams and deep-water oceans are relatively less impacted by pollution inputs.

Question 20

_______________________ is the only effective way to protect groundwater.

Accepted Answer

Pollution prevention involves implementing measures and practices to prevent contamination of groundwater in the first place. This is the most effective way to protect groundwater because once it is contaminated, remediation can be difficult and expensive. Community-based cleanups, bioremediation, sewage treatment, and stream restoration may help to mitigate existing contamination, but preventing pollution in the first place is the most sustainable solution.

Quiz 11: Water Resources and Water Pollution

Which of the following can result in lakes being vulnerable to water pollution?

Which of the following statements about underground contaminants is false?

Which of the following statements is false?

Nitrates and phosphates are examples of

Which of the following developments of cultural eutrophication would occur last?

About ____ of the 100,000 medium to large lakes in the U.S. a.suffer from cultural eutrophication.

Assume you are vacationing by a small lake, where you intend to do some fishing. a.When you arrive at this lake, you notice a slight sulfur smell. Which phase of cultural eutrophication does this sulfur smell indicate?

An oxygen sag curve occurs when

Arsenic is released into drinking water

Which of the following is a nonpoint source of water pollution?

One class of pollutants that can cause excessive growth of algae is

Acids, salts, and metals are examples of

Which of the following is a point source of pollution?

Which of the following decrease(s) photosynthesis in bodies of water?

The practice of suspending rust particles in contaminated water, and then drawing out the rust with hand-held magnets, has been effective in dealing with

All of the following are nonpoint sources of water pollution except

Groundwater

Which of the following statements is false?

Which of the following aquatic ecosystems receives the vast majority of the global inputs of pollution?

_______________________ is the only effective way to protect groundwater.