- Eagan, Minnesota (Wikipedia)
Eagan (/ˈiːɡən/ EE-gən) is a city in Dakota County, Minnesota. It is south of Saint Paul and lies on the south bank of the Minnesota River, upstream from the confluence with the Mississippi River. Eagan and the other nearby suburbs form the southern section of the Minneapolis–Saint Paul area. Eagan’s population was 68,855 at the 2020 census. The city was home to the headquarters of Northwest Airlines (now Delta Air Lines).
- Calcium (Wikipedia)
Calcium is a chemical element; it has symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. It is the fifth most abundant element in Earth’s crust, and the third most abundant metal, after iron and aluminium. The most common calcium compound on Earth is calcium carbonate, found in limestone and the fossilised remnants of early sea life; gypsum, anhydrite, fluorite, and apatite are also sources of calcium. The name derives from Latin calx “lime”, which was obtained from heating limestone.