Cold sores - painful sores on the lips and around the mouth, caused by a virus. Canker sores - painful sores in the mouth, caused by bacteria or viruses. Thrush - a yeast infection that causes white patches in your mouth. Leukoplakia - white patches of excess cell growth on the cheeks, gums or tongue, common in smokers.
Energy and Metabolism. All living organisms need energy to grow and reproduce, maintain their structures, and respond to their environments. Metabolism is the set of life-sustaining chemical processes that enables organisms transform the chemical energy stored in molecules into energy that can be used for cellular processes.
best answer why the earth is important in many ways 1 it provides oxygen from trees and water and food and environment 2it gives us a place to stay and live 3 we need to keep it cleaner and stop all those people who litter the earthest answer why the earth is important in many ways 1 it provides oxygen from trees and water and food and environment 2