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 first English, called Old English, was the language of the Anglo-Saxons, who spoke a kind of Germanic language. It was in its nature a synthetic language (see synthetic and analytic languages).