Board Thread:Fun and Games/@comment-48285-20151005173825/@comment-4783583-20151007133058

Did you know there is a trick to making riddle?

Do you know that thanks to Tolkien's Riddels I have found out that trick?

Also can you solve this riddle I made:

There is a thing that is both colourless and pale blue

It comes from tree’s and feeds humans

It exist in three parts of 8 that 24 do not make

It gives life in the right amount and death in the wrong amount

It is hidden yet visible, what is it.

?