Convection occurs because: A. Small earthquakes occur within the Earth's crust causing rocks to shake and change temperature.

B. Oceanic crust is being destroyed at deep ocean trenches.

C. Molten rock comes close to the Earth's core it heats up, becomes less dense and rises and the molten rock near the Earth's crust cools down becomes more dense, and sinks causing the cycle of convection.

D. Convection does not occur within the Earth.

This is a scaffolding of protein fibers that us sell keep it shape in a cell division and cell movement

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.

High blood pressure occurs when there is too much blood flowing through the blood vessels at one time. by changing the amount of water in the blood, blood pressure can change. the excretory system can to lower blood pressure.which would most likely occur in the kidney? a)more water would be transferred from the nephron.b)less water would be absorbed into the nephron.c)the amount of water in the bladder would decrease.d)the amount of water in the blood would increase.