एस्किमो मूल निवासी हैं जिन्हें पारंपरिक रूप से किस प्रमुख नस्लीय समूह के तहत वर्गीकृत किया गया 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?