Igneous rocks can be melted into magma.
Answer:
Concave mirrors reflect light inward to one focal point. They are used to focus light.
Color and luster are two ways to identify an unknown metal. Other ways include weight and composition.
The correct answer is a,b and c.
a) its core becomes a white dwarf.
b) its outer layers form a nebula , or vast cloud of gas and dust.
c)its outer layers expand , and the star becomes a red giant.