It consists of a papule from which the contents are not easily expressed. When inflamed these lesions form pustules and nodules. The open form of comedo, called a blackhead, is rarely inflamed. It has a dilated opening from which the oily debris is easily expressed.
The Tropic of Capricorn is the circle marking the latitude 23.5 degrees south where the sun is directly overhead at noon on December 21, the beginning of winter in the northern hemisphere.
Tropics of Cancer and Capricorn. Located at 23.5 degrees North and 23.5 degrees South of the Equator, this area of Planet Earth (between those two lines) is known as the Tropics, and is colored with a lighter blue color on the globe.eople living North of the Tropic of Cancer and South of the Tropic of Capricorn experience dramatic seasonal climate changes, based on the earth's tilt, and the subsequent angle of the sun.