Answer:
I am so delicate that even mentioning me breaks me. What am I?
Everyone in the world needs me. They generously give me but never take me. What am I?
I can be 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?
I am a kind of coat that can only be put on when wet.
Squeeze me and I cry tears as red as my flesh but my heart is made of stone.
The answer I give is yes, but what I mean is no. What was the question?