My sunday quiz 4

aa

• a

• a

• a

• aa

Water pollution occurs when:

• Harmful substances enter a water supply

• Industries dispose of waste safely and correctly.

• Industries cut costs with waste disposal.

• None of the above.

We can prevent water pollution by:

• Reduce the use of plastic.

• Properly dispose of chemicals.

• Clean up after your animals.

• All of the above

There is nothing we can do to stop water pollution.

• True

• False

Which of the following is not a natural cause of water pollution?

• Volcanoes

• Animal waste

• Oil spills

• Silt from storms and floods

What can happen to fish when there is not enough oxygen in the water?

• They can suffocate

• They can't float

• They can't see.

• Nothing. Fish don't need oxygen.

How much of water on Earth is FRESH SURFACE water?

• 0.3%

• 3%

• 97%

• 30%

Canada's lakes have _____ % of the world's surface freshwater

• 20

• 60

• 100

• 0.03

How many gallons of water are used from Lake Michigan EACH DAY?

• 100

• 1 billion

• 3 million

• 1 million

A colorless, odorless gas that decreases the blood's ability to carry oxygen.  Can cause faintness, death.

• Nitrogen oxides
• Ground-level ozone
• Carbon monoxide
• Sulfur dioxide