Answer:
I climb higher as I get hotter. I can never escape from my crystal cage.
I am an activity involving pins flying in the air.
While you were folding a letter you got me. Usually you will do whatever it takes to avoid me but now you can't help but find me.
I am made by nature soft as silk; A puffy cloud white as milk; Snow tops this tropical crop; The dirtiest part of a mop.
I am the place to turn when nature calls.
I am a animal that is cute but dangerous, what am I?