TASK DEFINITION: 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.
PROBLEM: 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

SOLUTION: At higher elevations, there is less air to press on a given area.

PROBLEM: Question: What happens when we get closer to the sun? 
 Answer: heat up

SOLUTION: The stratosphere gets most of its heat from the Sun. Therefore, its warmer closer to the Sun.

PROBLEM: Question: Ian wants to produce less pollutants, so he buys a car that is a plug-in hybrid. The car will run on electricity better if it's plugged in for a 
 Answer: longer time

SOLUTION:
Plug-in hybrids run for a longer time on electricity and so are less polluting than regular hybrids.