What Am I Riddles

Question: What grows up and down at the same time?

Question: I can bring tears to your eyes; resurrect the dead, make you smile, and reverse time. I form in an instant but I last a life time. What am I?

Question: I am the beginning of the end, the end of every place. I am the beginning of eternity, the end of time and space. What am I?

Question: What has a foot but no leg?

Question: The person who buys me doesn't need me, the person who makes me doesn't want me, and the person who uses me can't appreciate me.

What am I?