White dwarfs have a surface composed of a thin layer of ____________.
A) hydrogen and oxygen
B) hydrogen and helium
C) carbon and oxygen
D) carbon and helium

Name: White dwarfs have a surface composed of a thin layer of ____________. A) hydrogen and oxygen B) hydrogen and helium C) carbon and oxygen D) carbon and helium
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White dwarfs typically have a surface layer composed of hydrogen and helium, as these are the lightest elements and remain on the surface after heavier elements have sunk to the core.

White Dwarfs Have a Surface Composed of a Thin Layer