About. com that changed its name recently to dotdash is basically a subject directory. It is a colection of blogs articles about various general intrests of writers. Most of the information it contains is not vetted and thus does not qualify as reference point.
Rubbing two sticks together will cause friction
Explanation:
Formal; A formal information system is based on
the organization represented by the organization chart.
Informal; The informal information system is
employee based system designed
to meet personal and vocational needs
and to help in solution of work-related problems.
I'm pretty sure it's C) or D) because it seems those make the most sense because providing excitement does not matter if that is not their point, repeating a previous point is practically useless because that point has already been said.
The answer is A. The earth was formed 4.54 years ago, and during those first serveral hundred million years, oceans, continents started to form.
A) Precambrian time.
