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 language with the most native speakers is Mandarin. The language that is most widely spoken in the world is English. The least spoken language is a tie of about 200 langu â¦ ages, with only 1 or 2 remaining speakers. Ter Sami is often listed as the least spoken, but there are languages all over Australia, Africa , and the Americas with only 1 speaker left.