Question

3. Why is it suggested that trees should be planted to check
pollution?
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Answer 1

Answer:

They can soak up fine particle pollution from cars, power plants, and factories — an important job, given that particulates wreak havoc on human lungs and kill some 3.2 million people worldwide each year. The precise effect varies from city to city, but generally trees do improve air quality.

Answer 2

Answer:

Improve air quality.

Leaves intercept and hold small particles on their surfaces--like dust, ash, pollen, and smoke—and absorb gaseous air pollution. Ground-level ozone formation is reduced because air temperatures in tree-filled areas are cooler.