Problem: Derek is going on a hiking trip with his friends. Before they go they have to decide which mountain they want to go hiking on. Mount Joral is a mountain with a reasonably low altitude. Mount Rook is very high with a much higher altitude. While they are deciding Derek's best friend, Adam, reminds him that he has trouble breathing sometimes. Will the air pressure increase or decrease as altitude decreases?

A: decrease

Problem: Joseph and Walter are two brothers who have always gotten along well, but are now going to be separated for the first time in their lives. Walter has just graduated high school and is going off to live at college several states away from home. Joseph is about to be a freshman in high school, so he has several years before he will even have the possibility of going off to the same college as his brother. Which boy's height will increase more over the next year?

A: Joseph

Problem: David is experimenting with electromagnetic waves. He has four different waves to study, wave A, wave B, wave C, and wave D. In wave A, distance between two corresponding points on adjacent waves is greater than that of wave B. In wave C, the number of waves that pass a fixed point in a given time is greater than that of wave D. Which wave has lower frequency, wave C or wave D?

A: wave D

Problem: Blue island and Red island were two big sister islands situated 100 miles from each other. People on Blue island used gas powered vehicles, while people on Red island used electrical vehicles. The people on Blue island presented more respiratory problems. Which island released more nitrogen oxides into the atmosphere?

A:
Blue