What are the key problems facing the world’s cities in the 21st century and what can be done to solve them?
It is perhaps ironic that with the all problems city dwellers face, the number of people who choose to live and work in major cities continues to multiply. Despite numerous problems that exist in urban areas, the allure of cities still attracts hordes of migrants daily. Two of the key problems facing urban dwellers will be examined, alongside possible solutions to these problems.
	The 
first
 major Linking Words
problem
 is related to the issue of overpopulation. Due to the vast numbers of urban migrants, many major cities around the world can no longer support the burgeoning populace. Beijing and Delhi are prime examples of Use synonyms
this
 acute Linking Words
problem
. Overpopulation often has a knock-on effect and causes other problems by placing stress on the infrastructure of a particular area. Use synonyms
For example
, unemployment rates rise because there are not enough jobs for everyone. In order to solve Linking Words
this
 Linking Words
problem
, it is vital for governments to implement state-led family planning programs to encourage individuals to take responsibility for their own contraception. Use synonyms
One
 example of Use synonyms
this
 program is in China, with its “Linking Words
one
-child” policy.
	It has been suggested that overcrowding is Use synonyms
also
 a major Linking Words
problem
, which is often due to the overpopulation Use synonyms
problem
. Use synonyms
One
 consequence of overcrowding is that people cannot afford to live in urban areas because of exorbitant land prices. In many large cities across the globe, Use synonyms
this
 has created the emergence of slums, Linking Words
such
 as in Mexico City. Slums are often inhumane places to live, as there is often a lack of sanitation, basic shelter or electricity. Linking Words
One
 possible solution is for governments to limit the number of people living in cities. Use synonyms
One
 way of doing Use synonyms
this
 is to regenerate rural areas, so that young people will remain there and not be tempted to move to cities. Another method is for governments Linking Words
to provide
 state-owned Suggestion
provide
housing which
 will hopefully allow poorer inhabitants to afford to live in basic housing, rather than slums.
	In conclusion, there is no doubt that the economic inequality, which exists between the rich and the poor, has created key social problems Accept comma addition
housing, which
such
 as overpopulation and overcrowding. If governments continue to neglect  these two issues, Linking Words
then
 these urban problems will become more prevalent and cause widespread global collapse.Linking Words
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Use cohesive linking words accurately and appropriately
Linking words are very important in your essay.
To score effectively on your IELTS exam, you should make an effort to implement short concise sentences coupled with linking words.
Almost every sentence in your essay should have a linking word of some sort.
In fact, the only sentences that can omit linking words are your background sentence and thesis.
Linking word examples:
- firstly
 - secondly
 - thirdly
 - in additional
 - moreover
 - also
 - for example
 - for instance
 - therefore
 - however
 - although
 - even though
 - despite