Which of the following statements is not part of the cell theory? a. Cells are the basic unit of structure and function in all living things.
b. All cells are produced from other cells.
c. Only animal cells are composed of cells.
d. All living things are composed of cells.

c. Only animal cells are composed of cells.

Explanation:

This statement isn't included in cell therory ... Cause all living organisms are composed of cells.

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