Freshwater is a ____ resource.

• Unlimited

• Abundant

• Inexhaustible

• Limited

Most water pollution is directly linked to ____ activities.

• Planetarily

• Solar

• Human

• Natural

Oil and gasoline leaks from underground storage tanks are also sources of ____ pollution.

• Air

• Soil

• Water

• Noise

The ____ sources could be farm pesticides, farm animal wastes, or runoff of salt and chemicals from roads.

• Specific

• Focused

• Non-point

• Linear

Animal wastes, fertilizers, and pesticides are examples of _____ wastes.

• Farming wastes

• Industrial wastes

• Residential wastes

• Medical wastes

The waste products of factories and mines are examples of ____ wastes.

• Residential

• Commercial

• Industrial

• Municipal

When heat negatively affects bodies of water, it is known as ____.

• Temperature variation

• Thermal pollution

• Heat disturbance

• Warm water effect

Small particles of rocks and sand from land are called ____.

• Evaporate

• Sediment

• Precipitate

• Filtrate

A ____ source for water pollution could be a factory output pipe or a leaking landfill.

• Non-point

• Spread-out

• Dispersed

• Point

The water and human wastes are examples of ____ pollutants.

• Industrial

• Agricultural

• Household

• Commercial