In the United States where does the warm air come from? Gulf of Mexico
Northwest United States
Canada
Northeast United States

Gulf of Mexico

Explanation:

In North America, for example, cold and dry air covering thousands of miles flows south from the Arctic, especially in winter, and warm moist air flows south from the Gulf of Mexico. These different types air are called air masses.

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.