The first coin has a density of approximately 19. What kind of metal is it​

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?

In 2002, the rare earth elements mine in mountain pass, california was closed because

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory