भारत का कौन सा राज्य पारंपरिक रूप से मंगोलॉयड और कॉकेसॉयड प्रजातियों का मिलन स्थल माना जाता 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?