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Pollution is the introduction of .....1)....into an environmet that cause instabillity, disorder, harm or 2)..... to the ecosyestem i.e. physical systems or living organism. Pollution can take the form of chemical substances, or energy, such as noise, heat orlight. Pollutans, the elements of pollution, can be foreign 3).... or energies, or naturally occuring, when naturally occuring, they are considered contaminants when they exceed naturals level. Pollution is often classed as as point source or no point source pollution. The blacksmith institute issues annually a list of the world’s worst polluted places.
A pollutant is a waste material that pollutes air, water or soil. Three factors determinethe severity of a pollutant : its chemical nature, the 4)..... and the persistence. Air pollutions comes from both natural and man made sources. Though globally man made pollutans from 5)..... constructions, mining agriculture and warfare are increasingly significant in the air pollution equation
Motor vehicle emissions are one of the leading causes of air pollution. China, united states, russia, mexico, and japan are the world leaders in air pollution 6)...... principal stationary pollution sources include chemical plants, coal-fired power plants, oil refineries, petrochemical plants, nuclear waste disposal activy, incinerators, large livestock farms ( dairy cows, pigs, poultry, etc). PVC factories, metals productions factories, plastics factories and other 7).... industry. Agricultural air ollution comes from contemporary practices which include clear felling and burning of natural vegetationas well as spraying od pesticides and herbicides.
About 400 million metric tons of 8)..... wastes are generated each year. The united states alone produces about 250 millionmetric tons. Americans constitute less than 5 % of the world’s population, but produce roughly 25% of the world’s co2, and generate approximately 30% of world’s waste. In 2007, china has overtaken the united statesas the world’s 9) ..... producer of co 2
choice :
Biggest, contaminants, heavy, combustion, discomfort, subtances, concencration, emissions, consequences, hazardous
Pollution is the introduction of .....1)....into an environmet that cause instabillity, disorder, harm or 2)..... to the ecosyestem i.e. physical systems or living organism. Pollution can take the form of chemical substances, or energy, such as noise, heat orlight. Pollutans, the elements of pollution, can be foreign 3).... or energies, or naturally occuring, when naturally occuring, they are considered contaminants when they exceed naturals level. Pollution is often classed as as point source or no point source pollution. The blacksmith institute issues annually a list of the world’s worst polluted places.
A pollutant is a waste material that pollutes air, water or soil. Three factors determinethe severity of a pollutant : its chemical nature, the 4)..... and the persistence. Air pollutions comes from both natural and man made sources. Though globally man made pollutans from 5)..... constructions, mining agriculture and warfare are increasingly significant in the air pollution equation
Motor vehicle emissions are one of the leading causes of air pollution. China, united states, russia, mexico, and japan are the world leaders in air pollution 6)...... principal stationary pollution sources include chemical plants, coal-fired power plants, oil refineries, petrochemical plants, nuclear waste disposal activy, incinerators, large livestock farms ( dairy cows, pigs, poultry, etc). PVC factories, metals productions factories, plastics factories and other 7).... industry. Agricultural air ollution comes from contemporary practices which include clear felling and burning of natural vegetationas well as spraying od pesticides and herbicides.
About 400 million metric tons of 8)..... wastes are generated each year. The united states alone produces about 250 millionmetric tons. Americans constitute less than 5 % of the world’s population, but produce roughly 25% of the world’s co2, and generate approximately 30% of world’s waste. In 2007, china has overtaken the united statesas the world’s 9) ..... producer of co 2
choice :
Biggest, contaminants, heavy, combustion, discomfort, subtances, concencration, emissions, consequences, hazardous
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2.Contaminants
3.Discomfort
4.Consequences
5.Substances
6.Emissions
7.Hazardous
8.Heavy
9.Biggest
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2.Contaminants
3.Discomfort
4.Consequences
5.Substances
6.Emissions