How is the ozone beneficial to life on

The Ozone Layer, located within the Stratosphere is beneficial for life on Earth solely for the fact that it contains the largest concentration of Ozone, relative to the rest of the planet. The Ozone layer also provides the vital protection against most of the Sun's ultraviolet radiation which allows life to exist with little consequence to receiving sunlight.

Well, both latitude and intensity of light affect temperature because, the higher the light intensity, the higher the temperature and since latitude is the measure of how close you are to the equator, then the closer to the equator you are, the higher the temperature is.