Water Pollution: Sources, Effects, and Solutions

Multiple Choice

What is the primary cause of algae blooms in water?

• Excess sunlight

• Excess nutrients (nitrogen and phosphorus)

• Lack of fish

• High oxygen levels

Multiple Choice

How do nutrients enter the water, leading to algae blooms?

• Through rainfall

• From agricultural and industrial runoff

• Via fish migration

• Through evaporation

Multiple Choice

What happens to algae when they feed on excess nutrients?

• They die off quickly

• They multiply rapidly

• They become dormant

• They sink to the bottom

Multiple Choice

What effect do algae blooms have on oxygen levels in water?

• Increase oxygen levels

• Decrease oxygen levels

• No effect on oxygen levels

• Stabilize oxygen levels

Multiple Choice

What is one of the effects of algae blooms on aquatic life?

• Increased fish population

• Creation of "dead zones"

• Improved water clarity

• Enhanced plant growth