Hello
everyone. My name is Kamila. I hope you
enjoy my blog. Thanks in advance for your comments and participation.
I
want to start with introduction to my blog by saying how important water is in
our lives.
Today
in the world there are a lot of ecological and environmental problems, but in
my blog I will wright about water pollutions caused both by industrial and
domestic waste.
I
think many of us know the expression: “Water – is the life”. And this is all true, because human being
cannot live without water more than 3 days. Even though realizing all the
importance of the role of water in our lives, we still continue rigidly
maintain water reservoirs, irretrievably changing their natural mode with
different kinds of waste.
We
have a big amount of water on our planet, but the problem is that 97% of this
water is saline water of seas and oceans and only 3% is fresh water. Three
fourth of this fresh water (0.75%) is almost inaccessible to live organisms as
this water "is preserved" in glaciers of mountains and polar caps
(glaciers of the Arctic and Antarctic). It is a reserve of fresh water. From
the water available to live organisms, the main part is concluded in their
tissues.
The
bulk of water is concentrated in oceans. Water evaporating from its surface
gives reviver to natural and artificial ecosystems of a land. Closer the area to
the ocean amount of precipitation will be higher. The land constantly returns
water to the ocean, part of water evaporates, especially by the wood; river
collects some part, where water of rains and snows come in. The exchange of
moisture between an ocean and a land demands very large amount of energy: about
1/3 of the energy that Earth receives from the Sun is spent for it.
The
water cycle in the biosphere before development of a civilization was equilibrium;
the ocean received so much water from the rivers, as much spent on its
evaporation. If the climate didn't change, the water level in lakes didn't
decrease. With civilization development this cycle began to break. As a result
of watering of crops evaporation from a land increased. The rivers of the southern areas shoaled,
ocean pollution and occurrence on its surface of oil slick, decreased the
amount of water evaporated by ocean. All this worsens biosphere water supply.
Droughts become more frequent, there are centers of ecological disasters, for
example, a long-term catastrophic drought in Sahel's zone. (More about Sahel
can be read here http://en.wikipedia.org/wiki/Sahel_drought).
Besides,
fresh water which retreat to ocean and other water reservoirs from a land is
often polluted, practically not suitable for drink.
Formerly,
exhaustless resource – fresh pure water – now became exhaustible. Nowadays the water suitable for drink,
industrial production and irrigation is insufficient in many regions of the
world.
I know that most of us do not realize the global dimension of the problem but
according to the data of a number of European organizations, more than 5
million people in the world annually die from diseases caused by the consumption
of dirty or infected water. At present 31 countries in the world and more than
1 billion people have no regular access to pure water. Every 8 seconds in the
world a child dies who has
drunk non drinkable water. If in the North America each inhabitant consumes on
the average 1700 cubic meters of water a year, in Africa it is only 250. Over
the last 50 years sources of water in the countries of Africa were reduced by
three quarters, and in Asia – on two thirds. Drinking water in Africa is drunk
only by 60 percent of the population, and 50 percent of the African population
suffers from the diseases caused by polluted water.
Summarizing above mentioned I want people to be considerate of
our environment and always be conscious of reducing clean water consumption by
avoiding unnecessary use of the clean water.
Also, industry should take responsibility to take care of the
environment by recycling and cleaning waste and prevent the flow of the waste to
the water by implementing pollution control facilities.
I hope each of you had a take away from this. I will be writing
on this topic continuously in this blog, stay tuned for more.
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