As the Universe expands, galaxies move further and further apart.  The increasing distances between galaxies indicates the Universe is expanding or contracting?
expanding

The voice becomes deeper as the larynx in the throat grows larger.  Eric underwent surgery to increase the size of his larynx. His voice is now higher or deeper?
deeper

More advanced farming practices allowed a single farmer to grow food for many more people.  Farmer Bill got a new machine to sift his wheat. This machine allows him to grow more or less food?
more