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forest coveran analysis of satellite imageries and air photos indicates that in 1982 about 1 iof land area in india was thick forests and
use of natural resourcesyou studied about various natural resources such as land water soil minerals etc you know that these resources are limited
types of resource mapsgenerally several types of maps based on the type ofresburces are prepared some of these are soil maps
exploration of resourcesexploration of resources involves complex techniques which depend on the physical chemical and biological properties of
biogasyou may have heard of the use of cattle dung for production of biogas which is used for cooking water weeds like water hyacinth water
wave and tidal energywaves and tides are another source of energy which is perpetual and can be converted into electric energy particularly where
resource energythe demand for energy doubles every 14 years and is taken as one of the indicators of development of a country india
non-renewable resourcesafter learning about the renewable resources like water forests etc you would like to know what our non-renewable resources
water resourceswater as you know is the most essential component of life our water resources are limited though apparently water is
natural resourcesresources or the wealth nature has bestowed on us are essential for civilised living and therefore they have to be wisely used
pollution due to radiationshazards of nuclear radiations are extremely serious because they upset the genetic make up of the living beings
pollution due to noisesound is an important means of communication but high levels of noise could damage hearing and cause deterioration
eutrophicationmaterials such as sewage or organic wastes from milk plants canneries slaughter houses paper mills starch factories and fish
controlling air pollutionnow let us see how air pollution can be controlled i photochemical smog-eliminating this would require
depletion of ozone layersince the last decade or so there is concern about the possible reduction in the ozone layer surrounding the earth
greenhouse effectscientists have reason to believe that air pollution both due to carbon particles or soot and carbon dioxide would affect
acid raina side effect of air pollution is acid rain which is now of common occurrence you might have seen that some industries build very tall
photochemical smogphotochemical smog a secondary pollutant results when the two pollutants nitrogen oxide and hydrocarbons
air pollution by particulatesparticulates constitute the third category of air pollutants these are mostly fine carbon particles less than
air pollution by carbon monoxidecarbon monoxide is produced when organic materials such as gasoline coal charcoal and trash are incompletely burnt
pollutionnow-a-days you might have heard every one talking about pollution what does pollution mean pollution is the addition to the environment
life in foreststrees are the pillars of the forest upon which much of the other forest life is shaped associated with them there may
some features of the forestsforests are the most widespread stretches of vegetation harbouring diverse kinds of life forms they are
ecological crises the natural atmosphere which man has inherited from the past with healthy and fresh air shielding from excessive radiation of
some physical features of the atmospherei the atmosphere is a mixture of gases it is made up of 7808 nitrogen 21 oxygen by volume there is