It is evident that 
tourism
 contributes significantly to the national income. During the pandemic, Use synonyms
Use synonyms
tourism
 sector witnessed a decline in tourists due to mandatory Correct article usage
the tourism
Correct your spelling
border
boarder
 closures. The biggest impact was Correct your spelling
border
Correct your spelling
noticed
notified
noticied
 Correct your spelling
noticed
on
 developing countries like India, which are heavily Change preposition
in
reliable
 on the Replace the word
reliant
tourism
 national income. Just like a coin has two sides, Use synonyms
Linking Words
similarly
 Add a comma
,similarly
tourism
 has both advantages and disadvantages. 
Use synonyms
Firstly
, Linking Words
tourism
 boosts local Use synonyms
business
 which impacts the economy directly. The perks of Fix the agreement mistake
businesses
tourism
 are Use synonyms
specially
 enjoyed by Replace the word
especially
the 
developing economies as these economies attract tourists from developed nations with high purchasing parity. Correct article usage
apply
Secondly
, research Linking Words
have
 suggested Change the verb form
has
direct
 relationship between mental health and Add an article
a direct
tourism
. Use synonyms
Finally
, Linking Words
tourism
 allows people to discover new cultures and cuisines. 
On the flip side, Use synonyms
tourism
 is the biggest contributor to carbon footprint and pollution. Use synonyms
For instance
, Linking Words
Taj
 Mahal has reduced visiting hours as with the rise of pollution the colour of the site is turning to pink from white. Correct article usage
the Taj
Moreover
, due to Linking Words
increasing
 number of cases Correct article usage
the increasing
for
 vandalism against monuments, authorities have implemented strict measures to enter historical sites. 
In conclusion, Change preposition
of
tourism
 has both Use synonyms
postives
 and negatives. The onus is on the general public to conduct themselves responsibly and to consider their impact on the environment when choosing Correct your spelling
positives
positive
the
 mode of transportation.Change the word
their