The components of environment :- defination, list of components of environment(physical , biological, man made). Different layers of atmosphere.

1. College of horticulture,bidar
TOPIC
components of
environment

2. Environment
Derived from french word
“Environia” means to
surround
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Defined as “all surrounding
conditions that have direct impact
on all human beings and animals”
&

3. Lithosphere
Hydrosphere
Atmosphere
PHYSICAL
Flora
Fauna
BIOLOGICAL
Economic
Social
Cultural
MAN-MADE
A
B
C
COMPONENTS OF ENVIRONMENT

4. Atmosphere
“Atmosphere is a layer or setof
layers of gases surrounding the earth
surface.”
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5. Composition of atmosphere
⪢ Atmosphere includes the thick gaseous mantle
surrounding the earth.
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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
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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
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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
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10. Biotic component
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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
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