They are also called an intermediary. The decision made by an FI or a carrier under medicare part A or part B is called the local coverage determination (LCD).
The Lower Mantle, which is 49.2% of the Earth's mass.
All together, silicon accounts for approximately 15 percent of the Earth's mass. Magnesium. Since the majority of the Earth's volume is taken up by its liquid mantle, it makes sense that magnesium, one of the mantle's key components, is the fourth most abundant element on Earth.