water 3 f
TRANSCRIPT
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WATER HERITAGE OF
HUMANITY
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WHAT IS WATER?
Water is a very important resource, it is necessary for life.
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WHY IT IS IMPORTANTFOR MANKIND ?
Water is essential to allow our body to function optimally and defend itself
Like man, the world is composed for the 71% of water.
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WATER IN THE WORLD
The 71% of the Earth's surface is composed of water, but 97,5% of it is salt water. Of the remaining 2,5%, only 1% of soft water is used for
the human activities.
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THE WATER CRISIS!
For the uneven geographical distribution of water resources that the population has,the disponibility of water for person changes much in the different countries.
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DISTRIBUTION OF FRESH WATER IN THE WORLD
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Countries lacking water
The countries lacking water (politically weak and lacking in water) are: Southern Asia, the Middle East and Northern Africa. The daily water consumption in these countries is only 20 liters a day for one family. Instead it is 165 liters a day for an European family.
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The water situation in Italy
In Italy water isn't lacking but because of:-the increase of 1.5 degrees in
temperature;-the decrease of the annual precipitation
by 20%;- the stratum pollution;-the dispersion of 40% of water along the
water pipes;15% of the population for 4 months a year
are under the threshold of the 50 liters of day need
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Water consumption in cubic metres in our school
In the period from 15\09\2010 to 01\09\2011 6.606 m were used
In the period from 01\09\2011 to 4\09\2012 6.992m were used
In the period from 04\09\2012 to 10/09/2013 6.500m were used
In the period from 11\09\2013 to 23\09\2014 6.345m were used
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Water is life,don't waste it!
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Thanks you for your attention!!
By
Carlotta
Chiara
Fabiana
Martina
Piergiovanni