Answer:
I grow for a surface, even if you cut me. I continue to grow even after death.
Forward I’m heavy, but backwards I’m not.
A mighty weapon in the war against winged household pests.
In your fire you hear me scream, creaking and whining, yet I am dead before you lay me in your hearth.
The one who makes it, sells it. The one who buys it, never uses it. The one that uses it never knows that he’s using it.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?