Answer:
I am all around you but you cannot see me. I have no throat but you can hear me. Valued during summer but despised in the winter.
Which word does not belong in the following list: Stop cop mop chop prop shop or crop?
I have no voice but I can teach you all there is to know. I have spines and hinges but I am not a door. Once I've told you all, I cannot tell you more. What am I?
What goes up and down, but does not move?
I can swim but never get wet. I can run but never get tired. I follow you everywhere but never say a word.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.