Some water, sir?

[LCR]

Did you know that 70%poverznosti earth covered with water?
What we ourselves are made up of 65%of the water, imagine (I even had no idea that I was so wet!)?
It turns out that water - terribly important thing, just a first-class, and we it has not yet been taken.
I think this matter needs to be fixed - and quickly!
So I gathered you have samples of water, salt - from the seas and oceans - and fresh - from the streams and deep rivers.

And you, as always, must identify the authors of these fragments. God to help you