Answer:
I question what lies above, and I’m shared with those you love. At my sound your hands will shake, and oft heard soon after wake. A card not found in a deck.
Lots of them make up a word, And lots of words are in them. It's easy when you think about it. A while ago we stamped and mailed them.
Your reflection can be seen here, as long as you’re not moving.
The thinkers usually hold this body part
The day is their night and the night is their day, when I shout and they shout back I run away.
What has to be broken before you can use it ?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?