Which of the following is not a component of the cell theory?
- cells are the basic unit of organization in organisms
-all living things are made of cells
-all cells contain nuclei
-all cells come from pre-existing cells

The statement 'all cells contain nuclei' is NOT a component of the cell theory.

The cell theory is a universally accepted theory in biology which states the following points:

In conclusion, the statement 'all cells contain nuclei' is NOT a component of the cell theory.

Learn more in:

link

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

meiosis is the correct answer