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Air pollution

Basic Science

ENVIRONMENTAL POLLUTION

Pollution occurs when pollutants contaminate the natural surroundings; which brings about changes that affect our normal lifestyles adversely. Pollution is the introduction of contaminants into the environment that cause harm or discomfort to humans or other living organisms, or that damage the environment which can come in the form of chemical substances, or energy such as noise, heat or light.   Types of pollution Water Pollution Air Pollution Soil Pollution   WATER POLLUTION Water Pollution is the type of pollution that involves the contamination of various water bodies. Various aquatic creatures depend on these water bodies and its natural nutritious features to support its life. Water pollutants include insecticides and herbicides, food processing waste, pollutants from livestock operations, volatile organic compounds (VOCs), heavy metals, chemical waste and others.   EVALUATION What is pollution? Mention three types of pollution.   CAUSES OF WATER POLLUTION Industrial waste gets dumped into these water… Read More »ENVIRONMENTAL POLLUTION

PHE (Primary Classes)

Air Pollution

Air is made unsafe for breathing when it contains unpleasant odour from fåeces, dirt, poisonous gas and other rubbish. When air is polluted, it causes diseases or germs to spread to people. This can cause cough, small pox, chicken pox, tuberculosis (TB) and measles.   Polluted air can also cause suffocation. If people suffering from these diseases cough or sneeze, the germs that cause the diseases go into the air and other people could breathe them in, and be infected, with the diseases. Sources of Air Pollution Cigarette smoking causes harmful smoke and odour that pollute the air. Bad odour from refuse dumped carelessly causes air pollution Smoke from å bad motorcycle causes air pollution The smoke from generator causes air pollution   Presentation Step I: Teacher revises the previous topic Step II: Teacher introduces the new topic “Air pollution” Step III: Teacher lists and explains the various source of… Read More »Air Pollution

Basic Science

Air and Noise Pollution

AIR POLLUTION Air pollution is when unwanted chemicals, gasses, and particles enter the air and the atmosphere causing harm to animals and damaging the natural cycles of the Earth. Various Causes of Air pollution The burning of fossil fuels Sulfur dioxide emitted from the combustion of fossil fuels like coal, petroleum and other factory combustibles are one the major cause of air pollution. Pollution emitting from vehicles including trucks, jeeps, cars, trains, airplanes cause an immense amount of pollution. We rely on them to fulfill our daily basic needs of transportation. Agricultural activities Exhaust from factories and industries Mining operations Indoor air pollution   See also Environmental Health High and long jump Classes of food   Ways of preventing Air Pollution Use public mode of transportation Encourage people to use more and more public modes of transportation to reduce pollution. Also, try to make use of carpooling. If you and… Read More »Air and Noise Pollution

Biology

POLLUTION: DEFINITION. EFFECTS, CAUSES, SOURCES AND CONTROLS

POLLUTION: DEFINITION. EFFECTS, CAUSES, SOURCES AND CONTROLS What is pollution? This is the introduction of foreign material, poisonous compounds and excess nutrients or energy to the environment in harmful proportions. Any such substance is called a pollutant.   Effects of Pollution on Human Beings and other Organisms Effects and Control of causes of Pollutants in Air, Water and Soil Industrialisation and urbanisation are the main causes of pollution. As human beings exploit natural resources the delicate balance in the biosphere gets disturbed. The disturbance leads to the creation of conditions that are un-favourable to humans and other organisms. Sources of Pollutants Motor vehicles release carbon (II) oxide, sulphur (IV) oxide, and nitrogen oxides and hydrocarbons. Agricultural chemicals, fertilizers and pesticides. Factories, manufacturing and metal processing industries. They release toxic substances and gases as well as synthetic compounds that are bio-undegradable. They release solid particles or droplets of poisonous substances e.g.… Read More »POLLUTION: DEFINITION. EFFECTS, CAUSES, SOURCES AND CONTROLS

PHE

ENVIRONMENTAL POLLUTION

Environmental Pollution is the release of contaminated and harmful substances and materials into the surroundings which affect living things negatively. Pollution occurs to air, water and land. Pollution is the contamination of fresh and pure air, land and water with impurities. It is the release of unwanted substances into the surrounding.   Pollution is undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities. This is also the addition of substances or forms of energy to the environment at a rate faster than the environment can accomodate.   Types of Pollution Air pollution Water pollution Land pollution Noise pollution   Others include Visual pollution Thermal pollution Radioactive pollution   Air Pollution – This is the release of harmful and unwanted substance into the air. It is the addition of pollutants into the atmosphere. Water Pollution – This is the contamination of  water bodies… Read More »ENVIRONMENTAL POLLUTION

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