TECHNOLOGY
EARTH SCIENCES QUIZ
Please answer to the following Earth Sciences Question. Then you can indicate who must answer question 2.
Amethyst is a crystalline example of this, while the noncrystalline is usually called chalcedony, from which we get agate, jasper and carnelian. What is it?
Amethyst is a crystalline example of this, while the noncrystalline is usually called chalcedony, from which we get agate, jasper and carnelian. What is it?
