Answer:
You heard me before and then again. Afterward I die until you call me again.
Sometimes I am white, sometimes I am dark. Most people love me. What am I?
I am a ship that can be made to ride the greatest waves. I am not built by objects, but built by minds. What am I?
People see through me, but none pass through without killing me. I can be anywhere, and can be seen double or single. What am I?
I am the state when a person is holding a person inside
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.