What is rocks formed from a new substances?

Why are bears mammals? What is the only cell in the human body that doesn't have a nucleus? What does the H stand for in stainless steel SA213-TP347H? If there are 109 different elements there must be 109 different what? How is energy in starch molecules eventually released inside a muscle cell in your leg? Is Aniline formaldehyde resin thermoplastic or thermosetting? How many milliliters are in a pot of water? When 14C goes through radioactive decay one of its neutrons splits into a proton and an electron. What does 14C become? Where is ether found? What is a body that attracts other metal? Is vanialla a pure substance or mixture? Is chemistry a numerate science? What is the climate of Cairo? What do homologous structures and similarities in embryonic development suggest about the process of evolutionary change? What is a si-un? How can organisms enter the body? Would Give some examples of evaporation with picture? What planets can be found within 4.54 billion kilometers from the sun? What is the temperature of a typical summer day in Conway? What are two allele combination of two individuals who are true breeding for the height characteristics in pea plants?