Give a geographical reason for each of the following:

(i) Nilgiri region has variety of vegetation type.

(ii) Sundari trees are used for boat making and construction purposes.

(iii) Littoral forest is also called tidal forest.

(i) In mountain regions, temperature decreases with increase in altitude. This has a corresponding effect on the natural vegetation of the mountain region. Thus, vegetation in lower regions of Nilgiri is sub tropical and vegetation in upper regions of Nilgiri is temperate.

(ii) Sundari trees are used for boat making and construction purposes because these trees provide hard durable timber.

(iii) Littoral forest is also called tidal forest because they are found in tidal zone, an area that is above water at low tide and under water at high tide.