Oral complications caused by radiation therapy to the head and neck include the following: Fibrosis (growth of fibrous tissue) in the mucous membrane in the mouth. Tooth decay and gum disease. Breakdown of tissue in the area that receives radiation. Breakdown of bone in the area that receives radiation.
A landform is any natural formation of rock and dirt, found on Earth. A landform can be as large as a mountain range, or as small as a hill. It can be as large as a continent, or as small as a pond.
Landforms and Bodies of Water. A landform is a natural physical feature of the Earth's surface. Archipelago-a group or chain of islands clustered together in a sea or ocean. Arroyo-a gully that has been carved by water.Atoll-a ring (or partial ring) of coral that forms a ring around a lagoon. landform is a natural physical feature of the Earth's surface. Archipelago-a group or chain of islands clustered together in a sea or ocean. Arroyo-a gully that has been carved by water. Atoll-a ring (or partial ring) of coral that forms a ring around a lagoon.