In India 30 per cent area are mountainous 27 per cent are plateaus and 43 per cent are plains, all of these have specific advantages to be utilized.
(i) Mountains are source to many streams and rivers, some of them are perennial. These regions have very high potential for hydro electricity productions, etc and also sites for eco-tourism.
(ii) Plateaus are mostly laden with minerals, fossil fuels and forest, etc so are economically most productive.
(iii) Plains are most important land resource for human beings. These are fertile and most of the food crops etc are grown here and also for economic use it is exploited for development of factories, roads etc.
But all these advantages should be exploited sustain-ably.