playsChange the verb form
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  a significant role in human life. They provide calmness to our 
mind  Fix the agreement mistake
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 and 
senseCorrect article usage
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  of serenity. They 
  produce huge 
amountFix the agreement mistake
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  of oxygen in an environment that reduces carbon dioxide 
levelFix the agreement mistake
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  in the 
 .
First of all, 
 offersChange the verb form
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  enormous benefits to 
surroundingsCorrect article usage
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 . They enhance the beauty of 
the Correct article usage
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 nature with their 
. 
, they help to reduce carbon footprints made by humans by producing huge 
amountFix the agreement mistake
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  of oxygen, which in 
, helps to reduce humidity in an environment. 
, green areas 
 as 
HimalayaFix the agreement mistake
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  has 
hugeAdd an article
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   of 
 that beautify the region with their positive effects 
toChange preposition
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  the people and climate. 
, 
 place is still safe from the effects of global warming and known for its lush green 
  and 
 fact clearly 
convinceCorrect subject-verb agreement
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  the masses to believe that 
 are beneficial for human life.
, 
 helpsChange the verb form
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  to decrease  diseases in 
surroundingsCorrect article usage
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 . They produce fresh 
 that reduces filth in an environment , which 
 declineChange the verb form
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  the Correct article usage
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 respiratory ailments .They indirectly increase 
the Correct article usage
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 human life expectancy by providing fresh 
. To exemplify, Tasmania in Australia has 
tremendousAdd an article
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   of 
 that make the region different from other places, even 
itCorrect word choice
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  sells its fresh 
 to other parts of the country. 
 is why, it has less number of 
 patients as compared to other places. 
, it is indubitably advantageous to grow more 
 in 
surroundingsCorrect article usage
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 , as it does not have any negative effects.
In conclusion, 
 are really beneficial for human health as they have 
powerChange the article
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  to battle against human psychological diseases.