Water on Earth

Water pollution occurs when: select all that apply

• 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

An underground water supply is...

• erosion

• river

• water shed

• aquifer

The water found in cracks and pores in sand, gravel and rocks below the surface

• sediment

• ground water

• ocean water

• surface water

Taking care of natural resources like water, or soil...

• infiltration

• point source pollution

• conservation

• erosion

What is algal bloom?

• Plants bloom early down stream
• Water becomes cloudy
• Too much of nutrients
• Extremely rapid growth of algea

What percentage of the Earth's fresh water is available to us?

• 97 %

• 7 %

• 1 %

• 50 %

A rapid growth of algae could lead to: select all that apply

• A reduction of oxygen levels in the water.

• Water that can support more life.

• Waters that are devoid of life.

• An increase in oxygen levels.

There is nothing we can do to stop water pollution.

• True

• False

We can prevent water pollution by:

• Reduce the use of plastic.

• Properly dispose of chemicals.

• Clean up after your animals.

• All of the above