Why do you think traditional houses in Sikkim are built with wood and have slanting roofs?
Traditional houses in Sikkim are built with wood and have slanting roofs because: (1) Wood is easily available in mountain regions with forests of pine, oak, and walnut trees, (2) Wood provides natural insulation and keeps houses warm in cold climate, (3) Slanting roofs allow snow and rainwater to slide off easily, preventing accumulation on the roof, (4) The design protects against heavy snowfall and mountain rains, (5) Wooden houses are better suited to withstand earthquakes which are common in mountainous regions.
Explanation
The chapter mentions that traditional houses in mountains are built with wood and have slanting roofs. Mountains often have steep slopes and experience snow and rain. The slanting roof design helps snow and water slide off, while wood provides warmth in the cold climate.