About 8.7 million (give or take 1.3 million) is the new, estimated total number of species on Earth -- the most precise calculation ever offered -- with 6.5 million species on land and 2.2 million in oceans. Announced by the Census of Marine Life, the figure is based on a new analytical technique.
353,517 Helpful Votes. 388 Followers. A. The most common causes of swollen glands include: 1  Bacterial infection, such as strep throat. 2  Mouth sores or tooth infection. 3  Viral infection, such as mononucleosis or mono.. 4  Skin infection. 5  Ear infection. 6  Sexually transmitted disease.
Causes and Symptoms of Boils on the Neck. Typically, a boil on the neck will be just below the hairline or in the middle of the neck area. The causes apart from the bacteria that develops in infection are - hygiene and health issues, low immunity, sometimes heredity issues too.