Answer:
Give it food and it will live, give it water and it will die.
What can bring back the dead. Make us cry, make us laugh, make us young. Born in an instant yet lasts a life time?
Round as an apple, deep as a cup, and all the kings' horses can't fill it up. What is it?
Many have heard it, but nobody has ever seen it. It will not speak until spoken to. What is it?
Look into my face and I'm everybody. Scratch my back and I'm nobody.
I repeat only the last word you say. The more I repeat, the softer I got. I cannot be seen but can be heard. What am I?