What Am I Riddles

Question: You can easily touch me, but not see me.
You can throw me out, but not away.

What am I?

Question: Poke your fingers in my eyes and I will open wide my jaws. Linen cloth, quills, or paper, my greedy lust devours them all.

What am I?

Question: I was the first and now I am the one.

What am I?

Question: I can be thin but not fat, In your body but never on your placemat.I'm always better when I'm fresh,but you'll never see me in the flesh.What am I?

Question: If you're looking for something sweet I know what to do.
But if you don't like heat I'm not for you.

What am I?