Riddles X Riddles once again

Riddle #1:

The poor have it
The rich need it
But if they were both to eat it
They would surely die.

Riddle #2:

Turn us on our backs
Open up our stomachs
You will be the wisest of men
Though at first a lummox.

Riddle #3:

It occurs once in a minute
Twice in a moment
But never in one hundred thousand years.

Riddle #4:

I have a bed, but never sleep
I always run, but have no feet
I have a mouth but do not speak.

Riddle #5:

You eat something you neither plant nor plow
It is the son of water, but if water touches it, it dies.

Riddle #6:

Speak, friend, and enter!

Riddle #7:

It cannot be seen, cannot be felt,
Cannot be heard, cannot be smelt.
It lies behind stars and under hills,
And empty holes it fills.
It comes first and follows after,
Ends life, kills laughter.

Riddle #8:

My life can be measured in hours,
I serve by being devoured.
Thin, I am quick
Fat, I am slow
Wind is my foe.

Riddle #9:

You can see nothing else
When you look in my face
I will look you in the eye
And I will never lie.

+ Give ’em a try, answers will be put later.