Why is deep ocean water almost completely isolated from the atmosphere?

deep water is covered with a thick layer of sea ice.

(70pts)

deep water is too dense to rise up and mix with surface water.

deep water cannot flow, so it is only influenced by the water over it.

deep water is very light and so it flows too rapidly to contact the atmosphere.

Research cheetahs on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? -cheetah how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.