The White Mountains, a northern range of the Appalachian Mountains
Answer:
For low-mass stars, after the helium has fused into carbon, the core collapses again. As the core collapses, the outer layers of the star are expelled. A planetary nebula is formed by the outer layers. The core remains as a white dwarf and eventually cools to become a black dwarf.
Silicate materials.
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Answer:
the bermuda is an area of the western Atlantic Ocean between Florida, Bermuda, and Puerto Rico where a large number of ships and aircraft are said to have disappeared mysteriously.
Explanation: