Answer:
It cannot be seen, it weighs nothing, but when put into a barrel, it makes it lighter.
What can burn the eyes, sting the mouth, yet be consumed?
Creatures of power, creatures of grade, creatures of beauty, creatures of strength. As for their lives, they set everything's pace. For all things must come to live. Under their emerald embraceย Either in their life or in their death.
In the night a mountain, in the morning a meadow.
What has to be broken before it can be used?
What is so fragile that saying its name breaks it?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?