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(a) What factors do affect the climate of a place?

(b) Why do the South-West winds cause rain in India?

Answer:

(a) Location, altitude, distance from the sea and relief are the factors which affect the climate of a place.

(b) The South-West winds cause rain in India because:

(i) During early June, the low pressure condition over the North-Western plain gets intensified.

(ii) This low pressure which prevails is so powerful that it attracts the South-East trade winds, which, on crossing the equator in the Indian Ocean, acquire South-Westerly direction.

(iii) As it passes over the equatorial warm current, it brings with them the abundant moisture, which causes rainfall during June to September.