Which is true about relative dating? A. Relative dating uses the half-life of
isotopes to get the exact age of
rock or mineral
B. Carbon-14 dating is used on rocks
and minerals that are relatively
young
C. Potassium -Argon dating is used
on very old rocks and minerals.
D. The law of superposition is used to
determine a rocks relative age.

c is the correct answer

Explanation:

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c