जनगणना 2011 के अनुसार, भारत का वह राज्य कौन सा है जिसमें सर्वाधिक अनुसूचित जनजाति (ST) की जनसंख्या है?

In traditional anthropological classification of human races, which racial group was characterized as 'yellow-skinned'?

What is the approximate estimated proportion of ecumene (habitable) and non-ecumene (uninhabitable/sparsely inhabited) areas on the Earth's surface?