Answer:
I am useless when together but useful when I am broken apart. What am I?
What goes up but never comes down?
I row quickly with four oars, but never come out from under my own roof. What am I?
I have memories, but none of my own. Whatever's on my inside is what is shown. If I'm ever different, it's because you changed me. I feel like a decoration, here for you to arrange me. What am I?
Born in the ocean and white as snow. When I fall back to water I disappear without a trace.
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.