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Case studies

Rivers
Impacts of the Aswan Dam - Egypt, Nile
SHEEP Advantages Disadvantages

Social 1. Navigation on the river has 1. Water snails not being swept
been improved out of the river and increased
2. fish stocks in Lake Nasser number of irrigation channels has
provide a source of…

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At times during the rainy season, Bangladesh suffers from tropical revolving storms that
bring exceptional winds, intense rainfall and storm surges. Such conditions severely
affect the discharge of the three rivers and their distributaries, causing regular floods.

Human factors have played an increasing role in the severity of floods in…

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completed 3500km of water will be good for · may make flooding
embankments to include agriculture worse, when
compartments for embankments are
floodwater storage breached flood water
cannot get back into river
· the scheme would also
cut off large areas of
wetland therefore losing
fishing trade
· very expensive…

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Physical · 57% of land flooded
Effects · water receded
· Destroyed crops
· Wrecked roads, bridges and destroyed villages

Socio-Ec · 1300 people killed
onomic · 7 million homes destroyed
Effects · 25 million homeless
· shortage of drinking water and dry food
· diseases spread cholera dierrhoea etc.…

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· Surrounding vegetation includes agricultural land with limited interception storage, although
there is some forestry along the riverbanks. (So conditions would have been even
worse,without these patches of woodland!)
· The rain coincided with high tide in the bay. This restricted the rate of exit of floodwater into
the harbour.…

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Advantages Disadvantages

· Growth of tourism is now worth ten · Problems with salinity in irrigated areas such as
times more than profits from power Gila valley caused by evaporation of water from
generation. the land surface leaving behind salts

· Development of new tourist areas · The high salinity…

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Population

CASE STUDY: UK's Ageing Population
Background Info:
In 2008, the UK's population was estimated to be 61,399,118.
In 2006, there was a record 1.2 million people aged over 85.
Over the last 30 years the average life expectancy for men has risen from 69 to 75, while for
women…

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The one child policy was introduced in 1979, trying to restrict the number of children married
urban couples can have to one. This is because China was and still is very overpopulated to
the point where they may have a population explosion.

· In the 1970s Chinas Population grew by…

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marry they go to live with the males' parents. This means that they will look after them in old
age. If your child is a girl you will not have anyone to look after you in old age.

'Little Emperor Syndrome' there is a concern that many of the single…

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As you can see, the amount of children being born has decreased significantly, meaning the
birth rate has decrease, giving an overall decrease in population.

The Future

China's one child policy so far has been very efficient. However, will this continue? Here we
have an estimated population pyramid for China…

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