AIR POLLUTION
Air pollution comes from a wide variety of sources. In the world poisonous exhaust from industrial plants, brick kilns,old or poorly-serviced vehicles and dust from roads and construction sides are some of the major sources of air pollution.We can minimise this type of pollution by making less use of motor vehicles and avoiding the use of vehicle older than 20 years.We may also use proper lubricants to lesson the level of emission and pollutants. We can encourage people to use Compressed Natural Gas(CNG) or Liquid Petroleum Gas(LPG) for fuel in teir cars.The government may relocate hazardous industries like brick kilns to areas away from human habitation.
WATER POLLUTION
Water pollution can occur in oceans,rivers,lakes,ponds and underground reservoirs. As different water sources flow together, the pollution can spread easily and quickly. Cause of water pollution include:
(1)Increased Sediment from soil
(2)Erosion
(3)Improper waste disposal and littering
(4)Leakage of soil pollution into water supplies
(5)Organic materials that decay in water supplies.
In fact,polluting land means polluting the water.Throwing away a toxic substance on the ground near a water source means it eventually reaches a body of water.As a result,the water is polluted. Industrial wastes must not be disposed in rivers or lakes.We need to be more careful about disposing household waste too.Use of pesticides means that when it rains on the lawn or garden,chemicals wash into the water bodies. Therefore, we must be aware of the dangers of using pesticides as they may pollute rivers,canals and lakes.
SOIL POLLUTION
Among the most significant causes of soil pollution is the enormous volume of industrial waste which is being produce everyday but not disposed properly. The mismanagement of household waste, particularly the polythene shopping bags,has caused serious threat to the soil,and the drainage system. Sometime fuel leakage from automobiles may get waste away by rain and seep into the near by soil.Natural fertilizers and composte can be used instead of their chemical alternatives.Recycling is another way to reduce and control soil pollution. De-forestation also causes erosion, pollution and the loss of ferlity in the top soil.Planting trees and re-forestation help prevent soil erosion and pollution.