Snails and Slugs learn more about names for this taxon. Scientists aim to describe a single 'tree of life' that reflects the evolutionary relationships of living things. However, evolutionary relationships are a matter of ongoing discovery, and there are different opinions about how living things should be grouped and named. EOL reflects these differences by supporting several different scientific 'classifications'. Some species have been named more than once.
Causes of Ear bleeding that are uncommon. The following causes of Ear bleeding are diseases or conditions that affect more than 200,000 people, but less than 1 million people in the USA: 1  Face fracture - Bleeding from the ear.  more causes...Â».
Causes of Earaches. 1  Ear Infection. An infection of the middle ear space behind the eardrum is the most common cause. 2  Swimmer's Ear. An infection or irritation of the skin that lines the ear canal. 3  Ear Canal Injury. A cotton swab or fingernail can cause a scrape in the canal.  Ear Canal Abscess.