Answer:
Positon value to fill in
A 1.025 g/cm^3
B 34%
C 15°C
Step-by-step explanation:
1) The first value to fill in is the density on position A.
The procedure is using the temperature given, i.e. 20°C, and the salinity, 35ppt, with the graph.
Place your ruler on the horizontal axis on the mark of 35% and go upward vertically until reaching the horizontal lecture of 20°C, the intersection points is on the curve of density 1.025 g/cm^3.
So, that is the density to put on the table for the position A: 1.025 g/cm^3.
2) The next value to find is the salinity on position B.
Use the temperature 25°C and the density 1.023.
Move horizontally from the vertical read of 25°C to the right until you reach the curve with 1.023 g/cm^3 density. Then move vertically downward to read the salinity which is 34%.
Fill in the blank of position B that value: 34%.
3) The final blank corresponds to the temperature on the position C.
Moving upward from the salinity 35% until the curve density = 1.026 g/cm^3, you find that the intersection is at temperature 15°C.
That is the value to put on the missing value for position C: 15°C.