In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

Question: Allen is riding his bike on a path. The course ends up 1000 feet lower above sea level compared to the beginning. At which point is the air resistance lower? 
 Answer: at the beginning
At higher elevations, there is less air to press on a given area.

Question: Will launches a rocket off the ground. As the speed of the gas that comes from the boosters increases, the rocket's height reached 
 Answer: increases
The rocket goes upwards because the hot gases shoot downwards out of the nozzle. The faster the gases go downwards, the faster the rocket goes upwards.

Question: The population in Milo's city has been decreasing recently. What will happen to the city's level of water scarcity? 
 Answer: decrease

Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.