When limestone gets even more squashed, it can turn into travertine or marble. Limestone is also the main way you get lime, which is one of the things you make cement out of. To get lime, you have to burn limestone in lime kilns, and then what is left is lime. In the Middle Ages, people burned most of the statues of ancient Greece and Rome to turn them into lime.
Far as I am aware, CBD oil is not legal in Texas. It is legal for medical use in only Utah, Alabama, Kentucky, Wisconsin, Mississippi, Tennessee, North and South Carolina, Iowa, Florida, Georgia, New York, and Missouri.
Hemp is still a widely restricted and misunderstood crop but its benefits have been well documented, especially if you run a simple Google search online. One of the newest updates on hemp comes in the form of cannabidiol (CBD) oil being legal in Australia and the United States. According to several news reports, residents of Australia and the United States can now purchase legal CBD oil without a medical cannabis card.