Lower temperature and higher salinity yield the densest water.  If Mona is freezing a glass of water and the temperature of the water begins to decrease, what happens to the density of that water increases or decreases?
increases

With less ozone in the stratosphere, more UV rays reach the ground.  As ozone is depleted from the stratosphere, we can expect to have more or less UV rays on the ground?
more

Warming up exercises increases the blood flow to the muscles and increases the heart rate.  Tony wanted to prevent cramps by warming up. This decreases or increases blood flow to his muscles?
increases