1.)what is true about how the how the between operator range is defined?
a.  > = and < =
b.  < and >
c.  < = and > =
d.  > and <
2.)why are alias' used for table and columns?
a.  to hide the column or table
b.  to give the appearance that they are new
c.  to be able to remove them from the database
d.  to make the names easier to understand

Scientists have changed the model of the atom as they have gathered new evidence. one of the atomic models is shown below. what experimental evidence led to the development of this atomic model from the one before it? a few of the positive particles aimed at a gold foil seemed to bounce back. the colors of light emitted from heated atoms had very specific energies. experiments with water vapor showed that elements combine in specific proportions. cathode rays were bent in the same way whenever a magnet was brought near them.