what is adhesion in water

Adhesion in water refers to the attraction of water molecules to other molecules of a different kind. This attraction can be quite strong, especially with other molecules bearing positive or negative charges. Adhesion is important for many water-based processes in biology, including the movement of water to the tops of trees and the drainage of tears from tear ducts in the corners of your eyes. Adhesion is also observed when water "climbs" up a glass tube placed in a glass of water. The cohesive and adhesive forces of water are related, and they play a role in many water-based processes in biology. Cohesion allows substances to withstand rupture when placed under stress, while adhesion is the attraction between water and other molecules.