Презентация к уроку английского языка "NVIRONMENTAL POLLUTION" - скачать бесплатно

Types of pollution

Air Pollution
Water Pollution
Thermal Pollution
Soil Pollution
Radioactive Pollution

Air pollution

Imbalance in the quality of air so as to cause

Causes of air pollution

1.Natural sources
Volcanic eruptions
Forest fires
Pollen grains of flowers
2.Man-made sources
Deforestation
Emission

Water Pollution

Contamination of water by addition of undesirable organic, inorganic

Sources of water pollution

Community waste waters
Industrial wastes
Agricultural sources
Under ground water pollution
Marine

Soil pollution

Undesirable change in the physical, chemical or biological property which

Sources of Soil Pollution

Domestic wastes
Agricultural wastes
Industrial wastes
Excretory products
Salination

Radioactive pollution

Physical pollution that affects air, water and soil. Caused by

Man made sources

Nuclear weapons
Reactors and Nuclear fuel
Waste waters containing these wastes
X-rays

Effects

Mutation
Cancer
Radioactive substances in food chain cause retarded growth and bone cancer.
Increases

Noise pollution

Unwanted high pitch sound that pollutes the environment.
Maximum tolerable intensity

Effects of noise pollution

Damage to ear drum and impairment to hearing.
Damages

Thermal Pollution

The term thermal pollution has been used to indicate the

Causes of thermal pollution

Nuclear power plants
Coal fired power plants
Industrial effluents