Answer:
If a plane crashes on the border of US and Canada where do they bury the survivors?
I am a small paradise surrounded by dryness and heat.
The more of me you take, the more I appear behind you. What am I?
What gets whiter the dirtier it gets?
I can fly but I have no wings. I can cry but I have no eyes. Wherever I go, darkness follows me. What am I?
No matter how little or how much you use me, you change me every month.