11. What happens to atmospheric pressure as a person rises in altitude?
A. It's unaffected by changes in altitude.
OB. It decreases.
C. It changes based on the time of year.
D. It increases.

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line