Which best explains how meiosis is a contributing factor to genetic variation within a species? Meiosis reduces the number of mutations within an organism
Meiosis produces daughter cells that will contain identical chromosomes
Meiosis results in offspring that contain allele from only one parent gamete
Meiosis allows for crossing over of chromosomes, resulting in new gene combinations

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