Water cycle and water pollution

Most of the Earth's water is in

• salty oceans
• freshwater lakes
• freshwater ponds
• glaciers

Which represents the distribution of water on Earth?

• 3% freshwater, 97% salt water
• 97% freshwater, 3% salt water
• 71% freshwater, 29% salt water
• 29% freshwater, 71% salt water

Sewage is ____________ waste.

• solid

• liquid

• gaseous

What is the worst thing about water pollution?

• no more showers

• no more drinking water

• no more swimming

• brushing hair

• wonder woman

What causes pollution?

• the ocean

• trash

• fish

• memes

97% of the water on earth is _________, making it undrinkable for humans.

• fresh water
• ground water
• salt water
• surface water

A farmer applies excess fertilizer to one of her fields just before a rainstorm. What kind of pollution is this most likely to lead to?

• Toxic

• Sediment

• Nutrient

• Bacterial

This type of pollution comes from any heating of natural water that results from human activity

• Thermal pollution

• Chemical pollution

• Biological pollution

Which of the following is an effect of an oil spill?

• Many plants and animals die.

• The fishing industry improves.

• Plant life increases.

• The oil cleans the beaches.

What is one source of pollution?

• Runoffs

• Sewers

• Dumping