Tonsillitis is caused when bacteria or viruses invade your tonsils, causing them to swell. So the general cause of tonsillitis is a bacterial or viral invasion. Treatment options for tonsillitis depend on whether your infections is a bacteria or viral infection.
That means leaking pipes could have gone unfixed long enough to create the right conditions for the sinkhole. (Related pictures: How Humans Can Trigger Earthquakes.) In fact, Bonis thinks calling the Guatemala City chasm a sinkhole is a misnomerâa true sinkhole is an entirely natural phenomenon. There is no scientific term for what happened in Guatemala, he said, adding that he recommends the pit be dubbed a piping feature.
USGS Science Feature The Science of Sinkholes. Sinkholes are common where the rock below the land surface is limestone, carbonate rock, salt beds, or rocks that can naturally be dissolved by groundwater circulating through them.As the rock dissolves, spaces and caverns develop underground.he map below shows areas of the United States where certain rock types that are susceptible to dissolution in water occur. In these areas the formation of underground cavities can form and catastrophic sinkholes can happen.