Components of environment
- 1. College of horticulture,bidar TOPIC components of environment
- 2. Environment Derived from french word “Environia” means to surround 01 Defined as “all surrounding conditions that have direct impact on all human beings and animals” &
- 4. Atmosphere “Atmosphere is a layer or setof layers of gases surrounding the earth surface.” 4
- 5. Composition of atmosphere ⪢ Atmosphere includes the thick gaseous mantle surrounding the earth. 5 GAS % BY VOLUME Nitrogen 78.08 Oxygen 20.95 Argon 0.93 Carbon dioxide 0.03 Neon 0.0018 helium 0.00052
- 6. Major layers of atmosphere REGION ALTITUDE RANGE (KM) IMPORTANT CHEMICAL troposphere 0-20 Nitrogen,oxygen, water vapour,carbon dioxide stratosphere 20-50 Ozone Mesosphere 50-85 oxygen+nitric oxide thermosphere 85-500 oxygen+nirtic oxide
- 7. “ Core which is approx. 7000km in diameter and located at earth surface 7 Lithosphere (litho=rocky ,sphere=solid outermost shell)
- 8. lithosphere Core 2 layers- outer core inner core Mantle – surrounds the core 2 parts – upper mantle lower mantle Crust - oceanic crust - continental crust 8
- 9. Hdrosphere Includes all water on earth . All water includes solid(ice)+liquid(water)+gas(water vapour). It is the universal solvent and basis of all life on the planet 9
- 10. Biotic component 10 Biosphere is the combination of atmosphere ,lithosphere and hydrosphere . Biosphere is absent at north and south poles. The energy required for life in biosphere come from sun and nutrients comes from air,water and soil. The same source is are recycled again and again to continue life. The extreme range of biosphere is 10km above sea level, 8km depth in oceans.
- 11. Thank you 11