Chromosomes, which contain dna, have several functions. all but one of these statements is a function of chromosomes. a. chromosomes determine the traits of an organism. b. chromosomes provide instructions to make proteins. c. chromosomes determine the gender of an individual. d. chromosomes an organism produce usable energy.

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