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: Air pressure is higher in the 
 Answer: valleys.
Air pressure is less at higher elevations.

Question: Do gas engine cars pollute more or less than electric engine cars? 
 Answer: more
Plug-in hybrids run for a longer time on electricity and so are less polluting than regular hybrids.

Question: Dean looked at the sky with his eyes, then looked at the sky with his telescope. Dean saw less through his eyes, because the lens there was 
 Answer: smaller

The larger a telescope's mirror or lens, the better it is at seeing narrowly separated objects as individual objects and the sharper the images look.