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in biology a species is smallest and basic unit of classification. each species is placed within a single genus. for example biological name of human
ecology is divided into two fields aautecology b synecology a autecology it deals with life history population dynamics
the main objectives of study of ecology arei to study the distribution of biota local and geographical level.ii
ecology is a interdisciplinary branch of science that deals with inter relationship between living organism and their environment.the term ecology
the environmental pollution has become a biggest threat to humanity. to over-come this problem a suitable preventive legislation is need of
i area uses or permit exposure to radiation should be marked restricted area or radiation zone etc.ii
following ways can be used for control of noise pollutionit can be controlled by designing fabricating and using quiter machines.in heavy industries
following steps must be takendomestic and industrial garbage should be profitably utilized. compost pits and installation of gobar-gas plant in rural
various waystechniques suggested for control of water pollution are as follows1. pollutants radio active chemical biological present in water bodies
air pollution can be controlled by two fundamental ways.preventive techniqueimportant measure to control air pollutionsuitable fuel having low
i effect of human healtha mercury compounds in waste water in converted into methyl mercury bybacterial action which causes numbness of limbs lips
i effect on human healthair pollution causes many respiratory problems in human being.1 dust soot and smog causes several
there are two main sources of pollution1. natural sources a volcanic
radioactive pollution is a very special form of pollution of air water and soil with radioactive material. its nature of contamination and effects
sound is a main mean of communication and entertainment and is also very effective alarm system for some animal. a loud and unwanted or unpleasant
soil is upper crust of earth which support land plants and animals. it is defined as addition of substances to the soil which adversely affect
when toxic substances enter lakes streams rivers oceans and other water bodies they get dissolved or lie suspended in water. this causes pollution of
it is defined as the presence of chemicals and particulate in the atmosphere in quantities and pollution that are harmful to human health and
the earths environment has been composed in a way which sustains life on this planet. through on process the different constituents of the atmosphere
atmosphere is a multilayer blanket of various gases such as n2 78.80 o2 20.95 ar0.93 co2 0.03 water vapor and some other gases. this envelope extends
the biosphere is composed of all living organism. this sphere includes all the microorganism plants and animals of earth. in fact biosphere involves
the water on earth surface constitutes hydrosphere. about 75 of earth surface is covered with water and 97 of that water is present in oceans which
the lithosphere contains all of the hard solid land of the earth crust and the semisolid land underneath the crust. the surface of the lithosphere is
segments of environment the environment is not a simple distribution of gases but is highly complex and structured. it comprises of four
basics of environmentwe live in two world one is natural world of animals plants air water and soil that was present since the evolution of earth.