PATHOLOGY

Detailed explanation-1: -UV exposure is lower in areas further from the equator because the sun is farther away. Exposure is also decreased because UV rays must travel a greater distance through ozone-rich portions of the atmosphere to reach the earth’s surface.

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: -UV levels are higher closer to the equator. Closer to the equator the sun’s rays have a shorter distance to travel through the atmosphere and therefore less of the harmful UV radiation can be absorbed. With increasing altitude less atmosphere is available to absorb UV radiation.

Detailed explanation-4: -UV radiation is most intense near the equator and least intense toward the poles. Students may also say it is most intense at lower latitudes and increasingly intense as latitude increases.