अत्यधिक जनसंख्या घनत्व और ऐतिहासिक बसावट के कारण निम्नलिखित में से किस महाद्वीप को पारंपरिक रूप से 'मानव घर' (Human Home) कहा 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?