Answer:
What is used to yell in a text?
I'm the source of all emotion, but I'm caged in a white prison.
A tasty reward given to well behaved dogs and kids
What can you lose that will cause other people to lose theirs too?
Ambitious people will climb the social version of this contraption.
I touch the Earth, I touch the sky, but if I touch you, you’ll likely die. What am I?