Describe the modern atomic model of oxygen

The Oxygen is the Element with atomic number 8 on the Periodic Table of the Elements. It is a colorless gas, noted with the symbol O. Every atom consists of a positively charged nucleus surrounded and neutralized by negatively charged electrons revolving in orbits at varying distances from the nucleus, The atom of the oxygen has 2 first energy levels and 6 second energy levels.

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.