Water - structure many-sided Water - structure Water, oxide hydrogen, H20, the elementary steady many-sided in usual conditions a chemical compound of hydrogen with oxygen (11,19

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Transcript Water - structure many-sided Water - structure Water, oxide hydrogen, H20, the elementary steady many-sided in usual conditions a chemical compound of hydrogen with oxygen (11,19

Slide 1

Water - structure
many-sided


Slide 2

Water - structure
Water, oxide
hydrogen, H20, the elementary steady
many-sided
in usual conditions a chemical compound of
hydrogen with oxygen (11,19 % of hydrogen and
The
water. on weight), molecular weight
88,81main
% ofabout
oxygen
18,0160; a colorless liquid without a smell and taste
Water cycle.
(in thick layers has bluish color).
The states of water.
Water and people


Slide 3

1970 WARNING SIGNS

In 1970, water consumption worldwide
was half what is today. With 80% of all
sickness in the developing world linked
to polluted water, and with populations
sharply on the rise, the urgency of
water management became apparent.

2003 DRY AND DIRTY

Over 1,3 billion people have no access
to clean water. At least 2,2 million people
die annually from diseases related to
poor sanitation and contaminated
drinking water –that is about 10,000
deaths from bad water (or no water)
each day.

2025 PARCHED POPULACE

The United Nations estimates that the
world is per capita water supply will drop
by 1/3 in the next 20 years. The worst
strain will be in Africa and the Middle
East, where populations are growing fast
and rivers are running dry.


Slide 4

EVERY MINUTE, 7 PEOPLE DIE
FROM BAD WATER OR NO
WATER!

About 2 million tons of waste are dumped every day
into rivers, lakes and streams. One liter of wastewater
pollutes about eight liters of freshwater.

60%

WATER FOR THE PEOPLE
Population and water distribution don’t
always correspond, often leaving
highly populated regions with little
access to water. This is most true in
Asia, which has support 60% of the
world’s population with only 36% of
the world’s water.

6%

8%

13%

13%
1%

Asia

S. America N.America Africa Europe Oceania