Use the following diagram for the next four questions. The particle models shown above represent a proposed two-step mechanism for the destruction of ozone (O3) in the upper atmosphere.
Based on the proposed mechanism, which of the following best describes the concentration of the species represented above as the reaction occurs?
A. The concentration is larger than that of reactant or product.
B. The concentration is very low for the duration of the reaction.
C. The concentration increases steadily as the reaction proceeds.
D. The concentration fluctuates between high and low during the reaction.

The water cycle increase the water content in the earth atmosphere

Vander waals forces are inter molecular bonds that exist within molecules of the same substance. a water molecule is made up of oxygen and hydrogen atoms which share electrons between each other. the vander waals forces are forces that exist between multitude of different  molecules of water. dipole dipole forces is the type of vander waals force that exist in water. the oxygen atom which is more electronegative pulls the shared electron closer to itself thus generating a partial negative charge while the hydrogen acquire a partial positive charge. these two different charges causes attraction to occur in water molecules.

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