What may be found where groundwater erodes limestone to form valleys sinkholes and caverns? What may be found where groundwater erodes limestone to form valleys sinkholes and caverns Edit
January 29, 2011. The ampersand (&) is a symbol for and. Unlike the percent or degree symbol, you generally shouldn't use the ampersand except in the most informal situations. Some style guides allow ampersands as part of a formal company name (Smith & Wesson, Tiffany & Co.). Other style guides recommend spelling out the and in such cases. Most style guides recommend using the ampersand when the rest of the name is also an abbreviation (AT&T) and in common expressions (R&D). As you see here, there are no spaces on either side of the ampersand when it is used that way.
1 Mercury is a very rare element in the Earth's crust. 2  It accounts for only about only 0.08 parts per million (ppm). 3  Mercury generally is not allowed on aircraft because it combines so readily with aluminum, a metal that is common on aircraft. The modern element symbol for mercury is Hg, which is the symbol for another name for mercury: hydrargyrum. 2  Hydrargyrum comes from Greek words for water-silver (hydr-means water, argyros means silver). 3  Mercury is a very rare element in the Earth's crust. 4  It accounts for only about only 0.08 parts per million (ppm).