If the atmosphere did not contain an ozone layer, which of the following could happen?

the earth would become very cold.
the earth would not have weather.
the earth would not be protected from the sun's harmful rays.
the earth would not be protected from meteorites.

The pilot of a helicopter hovers at an altitude of 1200 feet over a park. the angle of depression to the base of a statue is 17 degrees. the angle of depression to the nearest park exit, in line with the statue, is 14 degrees. to the nearest foot, what is the distance from the statue to the exit?

Astep up transformer has 250 turns on its primary and 500 turns on it secondary. when the primary is connected to a 200 v and the secondary is connected to a floodlight that draws 5a, what is the power output? show all of your work.

You can melt ice by applying pressure because the solid/liquid line has a slope.