Which layer of The atmosphere do we live on?

What number of flights did The Challenger make? How much was neil Armstrong paid? Who was really the first man on the moon? What are the seven planent? Why are clouds made of soft fluffy cotton? How do you play au Claire de la lune on harmonica? Who was the fifth person to go into space? Do balloons degrade? What is the name of the center where all operations of the orbiter are coordinated during the mission? Is Sirius a low mass star? What is the name of the rocket latestly launched by ISRO? Have aliens been seen? The fastest moving planet in the solar system is? What are some really interesting star names? Is temperature increases as altitude increases because you are moving closer to the sun? What happens when the water vapor in the air condenses? Why does hades stay in the underworld? What is the total power output of the sun? What is the difference between achromatopsia and rod monochromacy? What is the space temp outside the space shuttle while it orbits earth?