PATHOLOGY

Detailed explanation-1: -At higher latitudes the sun is lower in the sky, so UV rays must travel a greater distance through ozone-rich portions of the atmosphere and in turn expose those latitudes to less UV radiation. UV intensity increases with altitude because there is less atmosphere to absorb the damaging rays.

Detailed explanation-2: -At the equator, the sun’s radiation is direct because it has to travel a shorter distance to penetrate the earth’s atmosphere. With growing latitude (both in the northern and southern hemispheres), the UV radiation intensity decreases and is the lowest at the poles.

Detailed explanation-3: -From the equator, latitude increases as you travel north or south, reaching 90 degrees at each pole.