Question

\[\text{1. Why is there air?}\\\text{2. What if there were no air?} \\ \text{\ \ \ \ a) What would it mean for the flight industry?} \\ \text{\ \ \ \ b) What would it mean for the balloon industry?}\]

Answer 1

2.a) think of what the wings of an airplane do for flight and why. similarly helicopters.
b)remember air is a fluid, like water. (buoyancy)

Answer 2

1. what caused the planet to form?