Answer:
I go around in circles, but always straight ahead, never complain, no matter where I am led.
I transfer oxygen from the atmosphere to your blood
Railroad Crossing, look out for the cars. Can you spell that, without any R's?
You can read me both ways I wear; One way it's a number reversed a snare.
I am whole but incomplete. I have no eyes yet I see. You can see and see right through me. My largest part is one fourth of what I once was.
I'm the source of all emotion but I'm caged in a white prison.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic