The average distance is about 150 million kilometers (149.6) or 93 million miles (92.9). This is defined as 1 astronomical unit, or AU, and is equal to about 8.2 light-minutes, as light from the Sun takes about 8 minutes to reach Earth.
The definition of a scourge is someone or something that causes a lot of trouble, problems or suffering. An example of a scourge is famine or the outbreak of a disease. YourDictionary definition and usage example.
Sarcoptes scabiei or the itch mite is a parasitic arthropod that burrows into skin and causes scabies. The mite is cosmopolitan, meaning can be found in all parts of the world.ther mammals, such as wild and domesticated dogs and cats (in which it is one cause of mange) as well as ungulates, wild boars, bovids, wombats, koalas, and great apes are affected. The discovery of the itch mite in 1687 marked scabies as the first disease of humans with a known cause.