When a cel is placed in this type of solution, there will be equal amounts of water moving in and out of the cell at equal rates. A. hypotonic
B. isotonic
C. supersonic
D. hypertonic​

B, Isotonic solution

Explanation:

In an isotonic solution, the flow of water in and out of the cell is happening at the same rate.

A. hypotonic

Explanation:

In an isotonic solution, the flow of water in and out of the cell is happening at the same rate. Figure 9.7. 1: Red blood cells in hypertonic, isotonic, and hypotonic solutions.

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