Pollution. Definition Pollution is putting harmful substances into the environment Three kinds ▫1. Air pollution ▫2. Water pollution ▫3. Land pollution.

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Presentation transcript:

Pollution

Definition Pollution is putting harmful substances into the environment Three kinds ▫1. Air pollution ▫2. Water pollution ▫3. Land pollution

Air Pollution The burning of fossil fuels releases pollutants (like CO2, NO2, NO3, and SO2) into the air. Air pollution causes breathing problems for people, damages the ozone layer, may affect global warming, and causes acid rain.

Human causes of air pollution Industries Power plants Exhaust from cars/buses

Natural causes of air pollution Methane from livestock Volcanic activity Smoke from wildfires

Smog A type of air pollution Caused by exhaust from cars/buses and industrial fumes in a city The word comes from combining SMoke and fOG

Water Pollution Water pollution can come from fertilizers and pesticides used in farming, industrial waste, oil runoff from roads, landfills, and septic tanks. When water that is contaminated enters soil, it then can enter our water lines and hurt us.

Sources of water pollution Point SourceNonpoint Source

Land Pollution

Causes of Land Pollution Industrial waste Construction Agriculture Domestic waste

Consequences of Pollution Kills animals Acid rain (kills trees and plants) Breathing problems for people Diseases in people Contaminated water Ozone layer depletion Global warming