Answer:
I go up when the rain comes down. What am I?
The more you take away from me, the bigger I shall get. What am I?
I am the kind of soda you must not drink.
I am a word of letters three. Add two and fewer there will be. What word am I?
I am created through suffering, inspiration, joy, and even despair. Born as an idea, and then presented to the human eye. Unlike living things, I never die. What am I?
I'm the source of all emotion but I'm caged in a white prison.