Afood handler washes hands after using restroom this is an example of

This is an example of GOOD HAND WASH PRACTICE. A food handler has to wash his hands several times during the course of his work, especially when he used the rest room. The food handler has to practice good hand washing in order to prevent food contamination and he must observe the five hand washing steps when doing this.

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.