question_answer 2)

Why is it that the houses in the Tarai region and in Goa and Mangalore have sloping roofs?  

Answer:

The houses in the Tarai region and in Goa and Mangalore have sloping roofs because they get heavy rain during the monsoon season. When there are sloping roofs, the rain water can easily flow off towards the ground or to a receptive unit where water is collected instead of collecting on the rooftop.