Why do chromosomes in body cells exist in pairs? OA.
because chromosomes group together to fit into the small space of a cell
ОВ.
because each parent contributes one of each type of chromosome to its offspring
OC.
because chromosomes from one parent must remain separate from those of the other
OD.
because each chromosome is duplicated when an organism is born

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation

What advantages does a pedigree have over a written passage?

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.