Ch 11 Water

Front

What is thermal pollution?

Back

Thermal pollution refers to the degradation of water quality by any process that changes ambient water temperature. It often results from industrial processes, power plants, and urban runoff.

Front

What is artificial eutrophication?

Back

Artificial eutrophication is the process by which water bodies receive excess nutrients (mainly phosphorus and nitrogen) due to human activities, leading to algal blooms and decreased oxygen levels.

Front

What is the primary source of ocean pollutants?

Back

Most ocean pollutants originate from activities on land, including agricultural runoff, industrial discharges, and urban waste.

Front

Define biomagnification.

Back

Biomagnification is the process by which the concentration of toxic substances increases in organisms at each successive level of the food chain.

Front

What is the largest reservoir of Earth's fresh water?

Back

The largest reservoir of Earth's fresh water is solidified ice in glaciers and ice sheets.

Front

How is freshwater used in industry?

Back

Freshwater is used in industry for various purposes, including the manufacturing process of materials, cooling machinery, and generating power.

Front

What is dissolved oxygen and why is it important?

Back

Dissolved oxygen is the amount of oxygen that is present in water. It is crucial for the survival of aquatic life and is an indicator of water quality.

Front

What are the effects of algal blooms on aquatic ecosystems?

Back

Algal blooms can deplete oxygen in the water, block sunlight, and produce toxins that harm aquatic life and disrupt ecosystems.

Front

What role do wetlands play in water quality?

Back

Wetlands act as natural filters, trapping pollutants and sediments, and they help maintain water quality by absorbing excess nutrients.

Front

What is the significance of aquifers?

Back

Aquifers are underground layers of water-bearing rock that store fresh water, providing a crucial source of drinking water and irrigation.