Answer:
Hard to catch, easy to hold. Can't be seen, unless it's cold.
Pregnant every time you see her, yet she never will give birth.
I make you weak at the worst of all times. I keep you safe, I keep you fine. I make your hands sweat. And your heart grow cold. I visit the weak, but seldom the bold.
What has a big mouth, yet never speaks?
What stays on the ground but never gets dirty?
What did the piece of wood say when he saw the screwdriver and screws approaching?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?