14. A patient is rushed into the emergency room experiencing extreme dehydration after doing yard work in 100 degree weather. The doctor orders an IV of saline for the patient.
Saline is isotonic to human blood. What will happen to the cells in the patients blood as a
result of the addition of saline?
A. They will shrink
B. They will expand
C. They will stay the same size
D. The saline will damage the cell membranes

By water evaporation from the leaves is created a negative pressure at the top of the tree that promotes the ascension  of the water through channels that are called xylem. there are also two molecule forces that are involved: the intra-water molecules cohesion (water molecules stick to each other) and the adhesion when the water molecules stick to the channels they are running in. this is what enables water to go from the roots to the top of a tall tree.

What have scientists learned about plant behavior by studying the dodder plant