Chicken skin appears as red or white bumps that usually start to appear on the buttock, upper arms, legs or cheeks. These will often be rough and the skin that is covered in the bumps may be itchy. Because it is less humid during this time, the rash will often appear more frequently in the winter.
The principle of faunal succession is based on the four assumptions of (1) the validity of the principle of superposition; (2) the sequence of fossils are the same everywhere (3) rock layers of different ages will contain different types of fossils; and (4) the validity of the principle of original horizontality. î î î.
Primary Succession occurs on surfaces where no soil exists, And Secondary Succession follows a disturbance that destroys a community without destroying the soil. Primary succession is slow and secondary succession is rapid. Ecological succession refers to orderly changes in an ecological community.econdary succession occurs on previously occupied land such as an area that has been devastated by a forest fire. Soil with organic content is found on this piece of land and organisms may be present at the beginning.