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.
Is soil important to living organisms? of course soil is important to every living organism because it serves as abode to some living organisms i.e soil living organisms such as the nematodes, earthworms,millipedes â¦ e.t.c. meanwhile, it also serves as source of living for human beings, thus, it serves as fundamental resource for terrestrial life.