Unit C Section 1 & 2 Review

Why is water quality important?

• It only affects aquatic life

• It only affects human health

• It is important for industrial use only

• It is crucial for human health, aquatic life, and ecosystems

Which of the following is an example of a biological indicator of water quality?

• pH

• Nitrogen

• Phosphorus

• Fish and invertebrates

What can excessive nitrogen and phosphorus in water lead to?

• Algae growth

• Decrease in water temperature

• Increase in dissolved oxygen

• Harmful algal blooms and oxygen depletion

Which of the following is a chemical indicator used to monitor water quality?

• Fish species

• Invertebrates

• Bacteria

• Dissolved oxygen

What happens to water quality when the dissolved oxygen levels are low?

• Water becomes less acidic

• More fish species thrive

• The water becomes more alkaline

• Some organisms, like trout, may die off

What is the primary component of air?

• Carbon dioxide

• Nitrogen oxides

• Oxygen

• Nitrogen

Which of the following is a major source of sulfur dioxide pollution?

• Forest fires

• Car exhaust

• Wind turbines

• Industrial processes

Which pollutant is responsible for smog formation?

• Carbon monoxide

• Nitrogen dioxide

• Methane

• Nitrogen oxides (NOx)

What is a health effect of carbon monoxide exposure?

• Improved lung function

• Decreased respiratory rate

• Increased oxygen in the blood

• Reduced oxygen transport in the blood

What is the function of catalytic converters in vehicles?

• Increase carbon monoxide emissions

• Convert nitrogen oxides into harmful compounds

• Prevent vehicle engines from overheating

• Reduce emissions of harmful pollutants like carbon monoxide