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.

[Q]: 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
[A]: At higher elevations, there is less air to press on a given area.

[Q]: Question: Carter puts two rocks outside; one is a soft pebble, the other is a solid stone. A year later, he checks on the rocks. The solid stone is still there because it has a resistance that is
Answer: greater
[A]: Different types of rocks weather at different rates. More resistant types of rocks will remain longer.

[Q]: Question: When people figured out how to lessen food the levels of food in the world
Answer: decreased
[A]:
Better farming techniques and machines increased the food supply and the distribution of food.