the natural environment earth’s environment is broken down into different spheres these spheres...
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The Natural Environment
Earth’s environment is broken down into different Spheres
These spheres work in harmony and are all connected to each other, resulting in a perfectly balanced planet.
Atmosphere The gaseous portion of the earth.
http://www.youtube.com/watch?v=GsjANjFlK0M
Composition
N2 (78%), O2(20%), Ar (<1%)CO2(<1%) H2O(0.5%),as well as many other trace gases and
chemicals.
Composition
The atmosphere also contains trace amounts of biotic and abiotic particles
Abiotic –
Biotic -
Leyers of the atmosphere
Troposphere :
Range: 10km above surface
Temp: 20C -> -60C
Contains 80% of gas particles
Almost all life exists within this layer
Where weather takes place
Stratosphere
Range: 10-50 km
Temp: 0C -> -60C
Contains most of the ozone gas
which protects us from harmful
UV radiation
Mesosphere
Range: 50-80km
Temp: 0C -> -100C
Very little gas
Air is thin
Thermosphere
Range: 80+ km
Temp: -100C -> +1000C
Very little gas.
Takes the brunt of the suns rays,
so it is very hot at daytime and very
cold at night
Hydrosphere
The liquid water portion of the Earth covers 71% of the Earth's surface Is 97% marine and 3% fresh water
Cryosphere The ice portion of the Earth
Antarctica contains 90% of the Earth's Cryosphere and holds approximately 80% of the Earth's fresh water.
Due to Climate Change the ice caps are melting, an event that is having tremendous effects on the earth such as rising sea levels and an increased rate of planetary warming.
Lithosphere
The solid rock and soil portion of the Earth.
The Lithosphere contains many of earth's resources within it such as metals, minerals, and fossil fuels.
When plates of the lithosphere collide, earthquakes occur.
Tar sands
http://www.youtube.com/watch?v=LaF5NfCjWHs
Biosphere Consists of all of the life on Earth.
The interactions seen in the biosphere between animals, plants and other organisms are what make earth interesting.
Interraction
All of the spheres of the planet are connected together and interact.
They are also affected by humans.
The biosphere is affected by the actions of humans more than anything else.