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.
It is possible that either Chinese or Greek were the first, but Greek has the first written texts, from what archaeology studies have unveiled. Tamil is the oldest language now in use that is spoken by more than 65,000,000 people. please don't compare Tamil with sanskrit ..Tamil is classical language ..