Role and Importance of Data in Public Health. Address the basic concepts, methods, and tools of public health data collection, use, and analysis and why evidence-based approaches are an essential part of public health practice.
Every language in the world-from English to Mandarin-evolved from a prehistoric 'mother tongue' first spoken in Africa tens of thousands of years ago, a new study reveals.
The world's largest spoken language is Chinese (Mandarin). It is followed by English, Hindustani (Hindi and Urdu) and Spanish in the fourth place. The world's largest spoken language is Chinese (Mandarin). It is followed by English, Hindustani (Hindi and Urdu) and Spanish in the fourth place.