QQuestion
“Vanishing Greenery; A Growing Urban Crisis”
In most of our cities, rapid urbanisation has led to a significant decrease in greenery over the past two decades. As the population increased, the demand for housing, roads and commercial buildings grew, leading to clearing of parks, gardens and natural resources. This has contributed to several problems.

(a) Mention one problem caused by the decrease in greenery.
(b) How do green plants improve air quality?
(c) What role can citizens play in addressing this problem?