Copper is a chemical element with the symbol Cu (from cuprum) and atomic number 29. It is a ductile metal with very high thermal and electrical conductivity. Pure copper is soft and malleable; a freshly exposed surface has a reddish-orange color. It is used as a conductor of heat and electricity, a building material, and a constituent of various metal .
Zinc, in commerce also spelter, is a chemical element; it has the symbol Zn and atomic number 30. It is the first element of group 12 of the periodic table. Zinc is, in some respects, chemically similar to magnesium, because its ion is of similar size and its only common oxidation state is 2. Zinc is the 24th most abundant element in the Earth's crust and has five stable . The most common zinc ore is sphalerite (zinc blende), a zinc sulfide mineral. The largest mineable amounts are found in Australia, A..
The Mars Society is a space-advocacy non-profit organization dedicated to promoting the human exploration and settlement of the planet Mars. Inspired by "The Case for Mars" conferences which were hosted by The Mars Underground at the University of Colorado Boulder and established by Dr. Robert Zubrin and many others in 1998, the organization works to educate the public, the media and government on the benefits of Mars exploration and the importance of planning for a Earth-to-Mars mission in the coming dec..
Witchcraft (also called witchery or spellcraft) broadly means the practice of, and belief in, magical skills and abilities that are able to be exercised individually, by designated , or by persons with the necessary esoteric secret knowledge. Witchcraft is a complex concept that varies culturally and societally, therefore it is difficult to define with precision definition&ots=aw4oz13kOS&sig=2CWBjLB2TIsUt1aNz_nyUPxOf5E&redir_esc=y#v=onepage&q=witchcraft definition&f=false Witchcraft in the Middle Ages, ..
