How the information agencies organise their information?

Fiction is organized by author last name.Non-fiction is organized by the Dewey Decimal System.

Sandstone is mined by quarrying:) Sandstone is clastic:)

Let's just say you have lots of vital information such as customer specifics, technological discovery that you'd want to implement into your company's operations, etc. You'd want to protect them from...

DNA

Anything really, you could write a report about it you could just take it as a learning experience you could share it with people you know if it is interesting or you could even research it some more.