proteins are macronutrients required for the function and regulation of all cells in the body an example of a complete plant protein that provides the necessary ratios of all the to the body

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.

Your answer is going to be a. i know my biology

The  answer is b since it all happens under ground