Content Definition of pollution Types of pollution Air pollution a) Introduction b) Cause c) Effects d) Prevention Water pollution a) Introduction b) Cause c) Effects d) Prevention
Content cont………. Land pollution a) Introduction b) Cause c) Effects d) Prevention Noise pollution a) Introduction b) Cause c) Effects d) Prevention
Definition of pollution Pollution is the introduction of contaminants into a natural environment that causes instability,disorder,harm or discomfort to the ecosystem . Pollution can take the form of chemical substances or energy such as noise, heat or light.
Types of pollution There are four types of pollution Air Water Land Noise
What is air pollution Air pollution is the introduction of chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living organisms or cause damage to the natural environment or built environment, into the atmosphere.
Causes of air pollutiono Industrializationis the first fundamental pollution cause. Among other things, industrialization set in motion the widespread use of fossil fuels (oil, gas & coal) which are now the main pollution sources.o Population growthPopulation growth is the second fundamental pollution cause. With population numbers literally exploding around the world, the demand for food and other goods goes up. This demand is met by expanded production and use of natural resources, which in its turn leads to higher levels of environmental pollution.
Effects of air pollution Acid rain Green house effects Smog
How to prevent air pollution Carpool Walk or ride a bicycle Connect your outdoor lights to a timer or use solar lighting. Wash clothes with warm or cold water instead of hot. Plant trees etc…….
What is water pollution Any change or modification in the physical, chemical and biological properties of water that has a detrimental consequence on living things is water pollution.
Causes of water pollution About 40% of deaths worldwide are caused by water pollution Water pollution is caused by organic and inorganic industrial waste discharged in water. Sewage and waste water. Oil leakage from ships.
Effects of water pollution Diseases like Cholera Aquatic life gets destroyed Affects food chain Cause algae Less pure water to drink
How to prevent water pollution Rivers should not be used for washing clothes or bathing animals in. Dams should be created. In sacred rivers like Ganga dead bodies shouldn’t be thrown.
What is land pollution Land pollution is the degradation of the earth’s surface and misuse of land resources often caused by human activities.
Causes of land pollution Throwing garbage Construction Waste Industrial waste Mining
Effects of land pollution Agriculture Littering Climate Biodiversity
How to prevent land pollution More and more land should be brought under farming. Trees should be planted everywhere. Waste matter should be disposed immediately Avoid drilling lands for underground water. Avoid using fertilizer and pesticides for farming.
What is noise pollution Noise pollution is excessive, displeasing humans or animals or machine created noise environmental that disrupts the activity or balance of humans and animals. Noise pollution not only results to irritation and anger.
Causes of noise pollution Traffic noise Air craft noise Noise from construction and civil engineers work. Noise from industries Noise from other sources
Effects of noise pollution Hearing loss Sleep disturbances High blood pressure Stress
How to prevent noise pollution The government should ensure the new machines are noise proof. Airports should be away from residential areas. ‘No horn’ boards should be put on/near school areas. We should talk less and work more.