Number
 of Change the article
A number
The number
people
 think that in future there will be a decline in Use synonyms
air
 Use synonyms
travel
. Use synonyms
This
 has some advantages Linking Words
such
 as clean ecosystems, and Linking Words
people
’s health will be better, Use synonyms
Linking Words
however
 it has some disadvantages Add a comma
however,
such
 as exploring other planets and Linking Words
cosmos
. In Correct article usage
the cosmos
this
 Linking Words
essay
 I will discuss the advantages and disadvantages of Add a comma
essay,
this
 development 
Linking Words
Firstly
, it is Linking Words
common
 Add an article
a common
the common
view
 that a reduction in Add the particle
to view
air
 Use synonyms
travel
 will lead to Use synonyms
decrease
 Add an article
a decrease
the decrease
of
 carbon emissions levelChange preposition
in
,
 since Remove the comma
apply
airplanes
 make a lot of carbon footprint in our ecosystem that detrimentally Change the spelling
aeroplanes
damage
 it. As an example, plenty of planes need natural gas, which is when mining has Correct subject-verb agreement
damages
negative
 effect on Add an article
a negative
environment
. Add an article
the environment
Furthermore
, radiation from Linking Words
air
 vehicles Use synonyms
also
 affects Linking Words
people
’s health, when they are flying Use synonyms
people
 get more Use synonyms
level
 of radiation. Fix the agreement mistake
levels
Thus
, Linking Words
air
 Use synonyms
travel
 has a lot of downsides, which will be solved if government officials embrace it seriously. 
Use synonyms
However
, it has some drawbacks that will influence our exploration of Linking Words
cosmos
. Because it will Correct article usage
the cosmos
effect
 on speed of exploration. Correct your spelling
affect
For example
, Linking Words
people
 fly to explore the cosmos and planets a lot of times, which Use synonyms
have
 an impact on Correct subject-verb agreement
has
level
 of exploration. Scientists in these explorations will find a replacement for the earth. Add an article
the level
However
, it is not a hundred Linking Words
percent
 that they will do it, Change the spelling
per cent
therefore
 we do not rely on it. 
In conclusion, Linking Words
Replace the word
reducing
reduction
 Replace the word
reducing
Use synonyms
Change preposition
in air
air
 Change preposition
in air
travel
 will affect beneficially for Use synonyms
people
 and Use synonyms
Correct article usage
the
an
 environmentCorrect article usage
the
, 
Rephrase
beneficially, nevertheless
nevertheless
 drawbacks Linking Words
such
 as Linking Words
Correct article usage
a slowdown
slowdown
 of exploitation here too. In my opinion, the benefits of Correct article usage
a slowdown
reduction
 Replace the word
reducing
air
 Use synonyms
travel
 will outweigh the disadvantages of Use synonyms
this
Linking Words