(Question)
At higher elevations, there is less air to press on a given area. 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 at the beginning or at the end?
(Answer)
at the beginning

(Question)
Lower temperature and higher salinity yield the densest water. When water starts to freeze it becomes more dense or less dense?
(Answer)
more dense

(Question)
Water near shore generally has more dissolved nutrients than water farther from shore. If water is close to a source of nutrients it will have few nutrients or more nutrients?
(Answer)
more nutrients