Mr. Wells told his students that the Water cycle DOES have a clear beginning and a clear end. Mrs. Meador disagrees with him and says the Water Cycle DOES NOT have a clear beginning and end. Who do you agree with and WHY?

Mrs Meador, because the water cycle is continuous and therefore has no clear end or beginning

Yeah, but what are you trying to ask?

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.