Will someone please help me?? This is for chemistry module 6 DBA on Florida virtual.

1. You are traveling upward in a hot air balloon. Explain to me what changes as you go through each layer of the atmosphere. Mention things like temperature, pressure, adjustments you will have to make to survive, etc.
2. When discussing gasses, why do you have to include temperature, pressure, and volume of the sample?
3. Why do they say that steam burns are more dangerous than being burned by boiling water?
4. Why will it take longer to boil pasta on the top of a mountain than at sea level?
5. Helium is lighter than air. Explain the difference.
6. What is it usually warmer upstairs than downstairs?