निम्नलिखित में से कौन-सा एक भौतिक/भौगोलिक कारक है जो जनसंख्या के वितरण को प्रभावित करता 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?