Answer:
Without this, eating food and Steven Spielberg's career would be very different.
Feed me and I live, give me drink and I die.
When young, I am sweet in the sun. When middle-aged, I make you gay. When old, I am valued more than ever.
Come up and let us go. Go down and here we stay
Long and slinky like a trout, never sings till it's guts come out.
Break me and I am better immediately set and harder to be broken again.