Riddle Quiz answers

What surrounds everyplace, is the beginning of the end, and the end of time and space?

I can be found in seconds, minutes and centuries, but not in days, years or decades

The more of this you have the less you see. What is it?

What has a head and tail but no limbs or body?

What grows when fed but dies when watered?

What is lighter than what it is made of?

What has many keys but unlocks no doors?

What looks back but cannot see?

What is it that can have the whole taken from it and still be left with some?

What kind of nail can be grown?

What has a neck but no head and two arms but no hands?

The more of these you take, the more you leave behind. What are they?