Over the past century, the percent of squirrels in the vicinity of Washington, DC, that are black instead of the more common gray has been continually
increasing. Which of the following statements best explains why this is happening?
OA. Gray squirrels are more comfortable with humans than black squirrels.
OB. Black squirrels are more visible against tree trunks than gray squirrels.
Oc. Black squirrels are more popular with tourists than gray squirrels.
OD. Black squirrels have a survival advantage over gray squirrels.

How do temperature and salinity affect deepwater currents? they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water.