How is the sound wave carried through the air to human ear

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?