Shown below are 4 species of finches, derived from a common ancestor. These species inhabit the same island. Which of the following BEST explains the appearance of these birds beaks?

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.

B. to increase the amount of antibiotics in the body