Hydrogen ions are found in_ which hydroxide ions are found in_

A. Acids and bases
B. Bases and acids
C. Acids and salts
D. Bases and salts

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

a. by using fur or clothes to trap heat energy near the body

c is the answer to this question. altitude affects the weather because air molecules evaporate.

what are the options? add them, then i will be glad to .