Answer:
I know a word of letters three, add two and less there will be.
What kind of nail can be grown?
Many foods can make me strong but give me water and I won't last long.
Raise your right appendage high above your head. Turn your head to the right and you will smell this.
Touch this and you'll regret it. But if it's cold, you won't forget it. What is it?
The sun bakes them, The hand breaks them, The foot treads on them, And the mouth tastes them. What are they?