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Introduction to environment
 

Introduction to environment

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by yogesh prajapati fybms....

by yogesh prajapati fybms....

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    Introduction to environment Introduction to environment Presentation Transcript

    • Introduction to environment Think Globally Act locally Save environment….
    • Definition:“The aggregate of all the circumstances, people, things, and events around us that influence our life.”“The circumstances, or conditions by which one is surrounded.” -Webster dictionary Source: Environmental studies(F.Y.B.Com) -Rashmi Desai (Vipul Prakashan)
    • Origin of Word „Environment?‟ French Word- „environner‟ To encircle or surround
    • Classification of environment…. Environment Physical/Natural Human environment environment Cultural Social Land, air, water, etc. Plants and animals Economic Political environment
    • Components of environment….. Abiotic components: All those physical and chemical aspects of environment that exert an influence on living organism.(1)lithosphere:SiAL(Silica+Aluminimum)that make up landmasses orcontinents.SiMA(Silica+Magnesium)that forms beds of oceans.
    • (2) Hydrosphere: Includes all oceans, seas, lakes, rivers that cover 71% of earth surface.
    • (3)Atmosphere:  A 100% envelope around earth.  Air comprises of 78% nitrogen, 21% oxygen, 0.03% of carbon dioxide and several other gases in small quantities and varying amounts of water vapour.  It is approx. 320km thick.
    • Biotic components: Include living organism i.e. plants, animals, man and their organisation within the environment.(1)Producer(autotrophic):Able to make their own food bytrapping solar radiation with help ofchlorophyll. E.g. plants.They convert light energy intochemical potential energy.
    •  (2)Consumers(hetrotrophic): They do not make their own food. Dependent on other organism for their nourishment. They includes: a) Primary consumer(HERBIVORES): Consist of animal that feed on green plants. E.g. grasshopper or cow. b) Secondary consumer(CARNIOVORES): They Obtain energy by eating herbivores. E.g. frog or tiger. c) Tertiary consumer(OMNIVORES): They feed secondary consumers. E.g. snake or bear.
    •  (3)Micro consumers or detritivores:  Include molluscs, earthworms, millipedes etc. which feed on dead organic matter. (4)Decomposers or reducers:  Include bacteria and fungi which breakdown complex compound of dead plants and animals, absorb some of decomposition products and release mineral nutrients that can be reused Primarily by PRODUCERS.
    • REFERENCES: Google/images Environmental studies(F.Y.B.Com) -Rashmi Desai (Vipul Prakashan)
    • GROUP MEMBERS:Pramita Nair 7201Ankita Parandekar 7211Yogesh Prajapati 7221Siddhi Salunke 7231Smruti Shirodkar 7241Tushar Tari 7251Jessy Vaz 7261
    • Thank you!Your questions are welcomed to us….