Water Pollution

What is one major cause of water pollution that involves fertilizers containing nitrogen and phosphorus?

• Thermal pollution

• Eutrophication

• Point source pollution

• Nonpoint source pollution

What happens when algae die and decompose in water bodies?

• Increase in oxygen levels

• Creation of dead zones

• Decrease in water temperature

• Reduction in nutrient levels

Which type of water pollution comes from a single, identifiable location?

• Nonpoint source pollution

• Eutrophication

• Point source pollution

• Thermal pollution

What is the largest consumer of water globally?

• Industry

• Agriculture

• Domestic use

• Power plants

What is a consequence of over-pumping groundwater for irrigation?

• Increase in water supply

• Decrease in water pollution

• Depletion of aquifers

• Rise in water temperature

What happens when excess nitrogen and phosphorus enter lakes and rivers?

• The water becomes cleaner and healthier

• Fish populations increase

• Algae grow rapidly, reducing oxygen levels

• Water temperatures decrease

Which of the following is an example of point source pollution?

• A car leaking oil onto the road

• Fertilizer runoff from multiple farms

• A factory releasing waste into a river

• Rainwater washing pesticides into a lake

What happens to aquatic life when water temperatures increase due to thermal pollution?

• They become more active

• They receive more oxygen

• Oxygen levels drop, making survival difficult

• They reproduce faster

What is the purpose of xeriscaping?

• To create gardens that require less water

• To increase irrigation

• To remove plants from dry areas

• To grow only high-water-use plants

Why is groundwater depletion a serious problem?

• It makes water cheaper for people to use

• It can take a long time for groundwater to refill naturally

• It improves soil quality

• It only affects areas with frequent rainfall