What is the meaning of salinity? the temperature of the water the amount of dissolved salts the amount of dissolved oxygen the density of the water

I searched up the definition; "the concentration of dissolved salts in water etc., usually expressed in parts per thousand by weight."

Answerwill have thinner; have thicker oceanic sediments;

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!