Upper respiratory allergies and inflammation and swelling of the adenoids, the tissue at the back of the nose, can cause poor fluid drainage from the middle ear to the external ear and therefore cause a blockage in the Eustachian tube. Excess fluid can lead to middle ear congestion.
1 Black skin and Asian skin have thicker and more compact dermis than white skin. This is also why blacks and Asians have fewer facial wrinkles than whites. 2  Black skin has more casual lipids and more moisture in the stratum corneum than white skin.  Black skin has 50% lower ceramides than white or Hispanic skin.
American Black Bear Genus: Ursus Species: americanus. The American black bear has a powerful build and a thick fur. Its face is long and narrow, its external ears are round, and its tail is short. The snout of the black bear is usually a dark brown color. It can be black, chocolate, brown, or cinnamon. There is even a cream-colored Kermodes bear that lives on the Pacific coast of British Columbia. It does not have a shoulder hump like the grizzly bear. Its claws are long and curved. The canines and molars of the black bear are not very large. The molars are used for grinding up the plants it eats. The average black bear is about 35 to 40 inches tall at the shoulders, and 4 1/2 to 6 feet long.