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.
Metabolism is a combination of chemical reactions that are spontaneous and release energy and chemical reactions that are non-spontaneous and require energy in order to proceed. Living organisms must take in energy via food, nutrients, or sunlight in order to carry out 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