1)A-john take the cut in pay is positive because he still has a job, negative is he has less pay. B- loose his job he can get a new one with more pay .
2)A- positive Helen move to with her family and not be alone, negative she looses a semester at school. B- positive she stays a school and can finish the semester, negative she stays alone.
3.A) positive Bill picks pecan he likes it, negative he picks pecan he doesn't like it. B) positive He picks cherry he likes it, he picks cherry he doesn't like it
Air gets thinner as we go higher because there are less trees and gets thicker on ground level because of the abundance of vegetation.
Water is not condensed on the surface because it doesn't have any pressure acting on it vertically but gets condensed as we go deeper because its own weight acts as a force.
Both scenarios are similar.