Question

90% of the world's population lives in plain lands.

Answer 1

Plains are low-lying areas and are one of the most important landforms for the human race. They mostly consist of fertile lands, which are ideal for agriculture and related activities. Easy availability of water near river plains is a reason for the settlement of people there. The flat surfaces facilitate the construction of houses, roads, industries, etc. Hence, the majority of the world's population lives in plains.