Anjel B. answered 06/28/21
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Adhesion allows molecules of different types to join together. Adhesion allows water to join with molecules that are not water molecules. It allows water to penetrate plant cells and move up the roots of a tree into its branches going against gravity. The water is so attracted to other molecules that it moves up up and up. A good way to see adhesion in action is to place a few drops of water on a smooth surface like your counter. The water joined togehter in a larger drop is cohesion (water attracting to itself). But if you break the "bubble" of water, you remove the surface tension that held it together, and the water spills out of the bubble and seeks to join with the counter and it spreads along. This is adhesion at work, the water now is more attracted to the counter than itself. As the water spreads it gets thinner and thinner and less attracted to itself and more attracted to the counter spreading and spreading. This happens all through nature and helps life live!