Plant diseases can be infectious (transmitted from plant to plant) or noninfectious. Noninfectious diseases are usually referred to as disorders. Common plant disorders are caused by deficiencies in plant nutrients, by waterlogged or polluted soil, and by polluted air.
Such refinements in the images of Betelgeuse's atmosphere has been helping to resolve the mystery of how massive amounts of dust and gas are expelled from red supergiant stars, an important source of enrichment for the interstellar medium.
How is the star Betelgeuse different from the sun? Betelgeuse is a supergiant red star that is nearing its end of life. The sun is a relatively small main sequence star in the middle of its life. It is believed that Betelgeu â¦ se is only 10 million years old, and that it has evolved so rapidly because of its extremely high mass - it is one of the largest stars we know of - and its demise as a type II supernova is predicted within only the next 1 million years.