LOVE OF NATURE

 SOIL POLLUTION              Soil is the basis of agriculture. All crops for human food and animal feed depends on it.Soil is the ultimate recipient of enormous quantity of man made waste products. Industrial wastes, sewage, sludge and polluted water cause soil pollution.   Source of soil pollution: The sources which may pollute the soil are two fold: a)Agricultural sources: Animal wastes, pesticides, fertilizers etc. b)Non-Agricultural sources: Wastes related to modern life activity of human beings. EFFECT OF SOIL POLLUTANTS ON PLANTS:     Materials that find their entry into the soil system having long persistence and accumulate in toxic  concentrations are called as soil pollutants.   There are four types of soil pollutants. a.Inorganic toxic compounds:      Inorganic residues in industrial waste present serious problem of disposal. They contain heavy metals which have potential toxicity.Among heavy ...

                                             WATER POLLUTION                          Water becomes polluted when its quality or composition is changed by man’s activities.Thus it becomes less suitable for drinking, domestic, agricultural, recreational and for fisheries or other purposes for which it would otherwise be suitable in its natural state. Pollution of water by effluents is, mainly due to poisons, de-oxygenation and suspended matter.  The following are some of the important sources of water pollution: Domestic wastes and effluents:     Water pollution occurs when the quantity of sewage effluent is too large to be broken down through biological degradation. Industrial wastes and effluents:    Main industrial source of pollution are pulp and paper ...

                                       AIR POLLUTION                      Air pollution means the presence of air contaminants in the outdoor atmosphere such as dust, fumes, gas, mist, odor, smoke, or vapor in quantities or characteristics, and of duration, such as to be injurious to human, plant or animal life. PHYSIOLOGICAL EFFECTS ON PLANTS: Some of the important air pollutants and their effects on plant growth and development are  Sulphur dioxide (SO2): It is a primary product of the combustions of sulphur containing fossil fuels.Coal burning presently accounts for 60 per cent of the sulphur dixoxide pollution. Sulphur oxides are absorbed by water and go into solution in water. If not absorbed, it soon oxidized to the less toxic SO3 and finally to sulfuric acid mist. Sulphuric acid mists on Condensation nuclei and fall u...

                                          GLOBAL WARMING                     Global warming is heating of earth's climate system it  caused by the pre-industrial period (between 1850-1900) due to human activities,burning of fossil fuel which increases heat close in to green house gas levels in earth's atmosphere. GREEN HOUSE EFFECT:                  The atmosphere is able to keep the earth habitable because some of its constituent gases can absorb heat radiation from the earth’s surface preventing it from escaping into space. These gases are called as greenhouse gases (GHGs).This heat trapping phenomenon is known as greenhouse effect. It is a natural phenomenon without which earth would be to too cold to support life. Some of the sun’s rays that penetrate the layer...