Maize or corn plants (Zea mays) have body cells each having 20 chromosomes in their nuclei. Meiosis is necessary in order to ensure that each gamete produced in the corn plant has —

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

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects