(i) Why the maximum and minimum temperature of cities is higher than in rural areas?

(ii) Why does relative humidity change over a day?

(i)

1.Concrete ground absorbs more heat in comparison to soil and retains it for a longer time.

2.Urban areas lack shade of trees.

3.Cooling effect in urban areas is relatively less due to less transpiration effect of plants.

(ii) Relative humidity of a place changes over a day because earth does not receive equal amount of heat throughout the day.