In present days, modernized 
cities
 have a lot of opportunities to broaden Use synonyms
people
's horizons. A vast amount of Use synonyms
people
 tend to move to Use synonyms
cities
 in seek of new work and a way of building their careers. Use synonyms
However
, it usually causes a shortage of places in working areas and overpopulation.
 Linking Words
First
 of all, due to the extremely large amount of Linking Words
people
, some Use synonyms
cities
 have various types of pollution. Overcrowded Use synonyms
cities
 are more likely to have more car owners. It causes Use synonyms
congestions
 on roads, which Fix the agreement mistake
congestion
produce
 noisy sounds that can be heard from nearby houses. Correct subject-verb agreement
produces
Also
, electric cars have not become so popular yet. Linking Words
Hence
, most Linking Words
of 
the vehicles use harmful fuel, gases Change preposition
apply
of 
which are spread into the air. Change preposition
apply
Furthermore
, humans throw away at least a few kilograms of rubbish every day. In most Linking Words
of 
the Change preposition
apply
cases
 it causes soil erosion and poisoning. 
 Notwithstanding the current situation, the problems could be solved by Add a comma
,cases
Correct your spelling
governments
government
goverments
 of those Correct article usage
the goverments
cities
. In order to prevent overusing Use synonyms
of 
cars, vehicle ownership might be limited and Change preposition
apply
people
 could be allowed to use them only Use synonyms
in
 certain hours. Change preposition
for
Moreover
, bicycle owners should be given some privileges to persuade others to use environmental safe transport. Governments must make a law of sorting garbage Linking Words
people
 produce by dividing trash cans into separate ones, Use synonyms
for 
Linking Words
instance
 old food must be stored in one container, while batteries are in another. 
 To sum up, I would say that overcrowded towns are the reason Add the comma(s)
,instance
of
 many environmental problems we have nowadays. Since we live on one planet, citizens and governments must cooperate to save  nature and prevent Change preposition
for
further
 catastrophes that may be escalated.Linking Words