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1. 1.

   What is a particulate matter? Describe how particulate matter gets added in the air around us.

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   Particulate matter is tiny solid or liquid particles, such a...

2. 2.

   How would the increase in the number of vehicles affect the condition of air in the city? Discuss.

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   An increase in the number of vehicles makes the air in a cit...

3. 3.

   Is landfill a good means of disposing wastes? Write two good points and two bad points of disposing wastes in this manner.

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   Landfill is a common method of disposing wastes.Good points:...