Active transport move molecules from a?

Is there supposed to be a picture attached to this..?

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration

Type in the minus sign

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.