What happends first when a star begins to run out of fuel

If a really huge star dies, it has so much mass that after the helium is used up, it still has enough carbon to fuse it into heavy elements like iron. When the core turns to iron, it no longer burns.The star's gravity causes it to collapse, and then it explodes into a supernova.

Hey the answer is The core finally cools into a white dwarf, then a black dwarf. This is what happens when a normal-sized star dies. If a really huge star dies, it has so much mass that after the helium is used up, it still  has enough carbon to fuse it into heavy elements like iron. When the  core turns to iron, it no longer burns.The star’s gravity causes it to collapse, and then it explodes into a  supernova. What’s left of the core can form a neutron star or a black  hole.

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ans.

gregor john mendel is known for study of inheritance in pea plants. he used garden pea plant for his study, having alternative traits for various characters. he performed cross-breeding in pea plants to check how characters are transmitted between parents to offspring, such as cross between pure tall and pure dwarf plant. mendel studied the inheritance patterns in pea plants for various generations.

thus, the correct answer includes options and f).