John and Pat's occupation best explains the difference between their skin pigmentation. Since Pat works as a lifeguard, she is more exposed to the sun, which tans her skin. John, on the other hand, works in the theater, where he isn't exposed to sunlight that much, so he is much lighter than his twin, Pat.
Mountains determine wind flow, as well as serving as a cloud break. Depending on which side of the mountain you’re on, you will either have a mostly dry, dead region. Or a moist, fertile region.
B)
Certain segments of DNA will be lost in the translation process, rendering certain genes obsolete in particular cells.
It is the most important because we need to know how the earth functions
