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.
These natural physical features on the earthâs surface called as landforms. Landforms are defined as the natural physical features found on the surface of the earth created as a result of various forces of nature such as wind, water, ice, and movement of tectonic plates.ountains are landforms higher than the surrounding areas. They are formed due to the tectonic movements, earthquakes, volcanic eruptions and erosion of the surrounding areas caused due to wind, water and ice. Mountains are found in the oceans and on land.