Which is one characteristic of deep ocean currents? Deep ocean currents move quickly.
Deep ocean currents are caused by winds.
Deep ocean currents move cold water toward the equator.
Deep ocean currents are affected by temperature but not by salinity

Historians are researchers of the past or people who understand the history of people. with this field, they must possess qualities such as being unbiased, patient, efficient reader, has a knack for logic and critical thinking and reasoning, disciplined, open-minded, resourceful, with good analytical ability, good reasoning skills and problem solving!

It is nonrenuable which means that once you have used it, it's gone forever.