Slide2The word 'nature' has several different meanings: 1: the natural physical world including plants and animals and landscapes etc.; 2: a particular type of thing; 3: a causal agent creating and controlling things in the universe; 4: the essential qualities or characteristics by which something is recognized; 5: the complex of emotional and intellectual attributes that determine a person's characteristic actions and reactions.
Slide7Air Pollution :- Is defined as contamination of hazardous gases which is released in the air, which disturbs natural composition and chemistry of air. Water Pollution :- involves any contaminated water, whether from chemical, particulate, or bacterial matter that degrades the water's quality and purity.
Slide8Soil Pollution:- Soil, or land pollution, is contamination of the soil that prevents natural growth and balance in the land whether it is used for cultivation, habitation, or a wildlife preserve. Noise pollution:- It refers to undesirable levels of noises caused by human activity that disrupt the standard of living in the affected area.
Slide10What the colors mean --These measurements show concentrations of carbon monoxide (CO) at altitudes of 15,000 feet. Red colors in these images indicate highest levels of CO (450 parts per billion). Blue colors indicate lowest levels of CO (50 ppb). Terra sees CO in the atmosphere from 2-3 miles above the surface, where it interacts with other gases and forms ozone. This pollutant can move upward to altitudes where it can be blown rapidly for great distances or it can move downward to the surface. CO is an air pollutant that also produces ozone, a greenhouse gas that is a human health hazard.
Slide11Atmosphere Lithosphere Biosphere The entire part of earth's land, soil, water & atmosphere in which living organism are found is called biosphere Hydrosphere Biosphere Model
Slide12Our current atmosphere is a mixture of many different gases & suspended particles. It is almost same every where up to an altitude of 80 Kms. The atmosphere is divided in to 4 layers-
Slide13Is an unwanted change in the quality of earth's earths atmosphere caused by emission of gases caused by emission of gases due to burning of fossil fuel, transportation, industrial institution etc.
Slide141.Gaseous waste: Oxides of nitrogen,SO2,CO3,CO.Cl,Br,I,O3 & smog. 2.Complex organic chemicals: Benzene, ether. 3.Acid prop lets: H2SO4, HNO3 4.Agrochemicals: fertilizers, pesticides, herbicixles, fungicides, , weedicides etc. 5.Fluorides 6.Metals: Mercury, lead , Zn, Fe, etc. 7.Solid waste: Garbage, plastic etc. 8.Radioactive waste: Nuclear reacters, uranium, nuclear explosion. 9.Noise waste
Slide16This era has rightly been called as the era of noise. Because heavy industrialization we are exposed to a high level of noise all around us. Noise has become a very important stress factor in modern life. It leads many health hazards. Some of the sources of noise pollution are aircraft, automobiles, factories, loudspeakers & pop& Rock-n-Roll music in clubs . Noise produces following health problems- 1)Auditory fatigue 2)Deafness or impaired vision 3.Rise in blood pressure, pulse rate 4.Headache 5)Nausea 6)Disturbed sleep 7)Emotional disturbances
Slide17 The sources/causes of noise pollution increased or probably originated with the invention of machines. Let us have a look at the various noise pollution causes in detail. Traffic: It is the biggest source of noise pollution in today's times, especially in urban areas. In the past few years the number of automobile vehicles has increased manifold. Thus, traffic problems created by these vehicles is an important source of noise pollution. The sound produced by the exhaust systems of trucks, autos, buses, motorcycles, etc. cause a lot of noise.
Slide18 Industrial Noise: The various machines used in industries are also a major cause of noise pollution. The different machines which are responsible for creating noise include the compressors, motors and other machinery. It is therefore recommended to grow trees in the premises of industries, which act as absorbents of noise. The trees grown in the premises of 'Tata Motors' an automobile company based in India is a perfect example of how to reduce noise pollution in the industrial belts. Railway Stations: Locomotive engines of trains are an important source of noise pollution. Besides, the shunting and switching operations in rail yards too cause noise pollution to a great extent. The whistles and horns being used by the railway employees add to the effect and increase noise pollution.
Slide19Soil pollution refers to an increased level of harmful human-made chemicals in the natural soil environment. Industrial pollutants and pesticides are two major soil pollution sources. Soil pollution can lead to serious water contamination and therefore create huge health issues.
Slide20Soil pollution is a result of many activities and experiments done by mankind which end up contaminating the soil : Industrial wastes such as harmful gases and chemicals, agricultural pesticides, fertilizers and insecticides are the most common causes of soil pollution. Ignorance towards soil management and related systems. Unfavorable and harmful irrigation practices. Improper septic system and management and maintenance of the same.
Slide21Leakages from sanitary sewage. Acid rains, when fumes released from industries get mixed with rains. Fuel leakages from automobiles, that get washed away due to rain and seep into the nearby soil. Unhealthy waste management techniques, which are characterized by release of sewage into the large dumping grounds and nearby streams or rivers.
Slide22There are many factors which control the soil pollution. It includes the limited use of fertilizers and pesticides. The grazing must be controlled and forest management should be done properly. The forestation and reforestation must be done. In areas of wind erosion wind breaks and shields must be used. The soil binding grass must be planted and the large trees must be placed along the banks. The industrial wastes must be dumped in the low lying areas. There is a definite technique of cropping which does not allow the weeds to settle on the fields. The mining ways must be improved along with their transportation.
Slide25We know that certain environmental conditions like air , water,& food are essential for man & survival. Apart from their availability their quality & quantity must be assured according to man , natural & acquired capacity for sustenance progress in industrialization has brought environmental hazards such as air water & noise pollution. These have caused many health problems & diseases.