Answer:
I hide but my head is outside. What am I?
I have hundreds of ears but cannot hear a thing. What am I?
I transfer oxygen from the atmosphere to your blood
Who plays when he works and works when he plays?
In buckles or lace, I help set the pace. The farther you go, the thinner I grow. What am I?
If all Wibbles are Criggles, all Borkins are Kwumblins, no Hoggles are Borkins, and all Criggles are Borkins, is it true that all Borkins are Criggles?