In some cities people are choosing cars instead of bicycles, while in other cities riding bikes is replacing cars. why is this the case? which development do you think this better?

Air

pollution

in big

cities

has become a big

problem

nowadays

,

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because many diseases are caused by

air

pollution

. In

this

essay, I want to tell in what way we can solve

this

global

problem

. One of the important

causes

of

air

pollution

incineration of waste in factories.the smoke from burning waste

causes

great harm to the environment.

Therefore

, the emissions from vehicles

such

as cars, buses and motorcycles, have a big effect on the

atmosphere

.Another factor

that is

determined widely is the development of

oil

production.Toxic gases from

oil

refineries cause black clouds in the lower

atmosphere

, which directly affect people's lifestyles.

This

problem

has been developing in recent years in large

cities

with high

oil

demand.

In addition

, many people are throwing rubbish in the street, which

causes

little damage to the

atmosphere

. In order to solve these problems caused by the factors mentioned above, there are some following beneficial solutions.

Firstly

, the government should have a resumption of

oil

refineries than usual strategies to reduce private transportation types

such

as motorbikes, cars by developing public vehicles and using green energy sources to

oil

factories energy sources in order to reduce greenhouse gas emissions.

Secondly

,

implementation

Correct article usage

the implementation

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of tree plantation projects in big

cities

is

also

an important and necessary solution to refresh the

atmosphere

. In conclusion,

air

pollution

is still currently a serious

problem

in many big

cities

throughout the world and

this

problem

is caused by different factors but most of the

causes

for

this

are from people