According to This Plot, Which Is the Third Most Abundant

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Q64: What is the lifetime of a star

Q65: What is a helium flash?<br>A) The sudden

Q67: Which type of star spends the shortest

Q68: What will happen in the Sun immediately

Q70: No stars are expected with masses greater

Q71: Which type of star spends the longest

Q72: Carbon fusion occur in high-mass stars but

Q74: Historical Supernova: You find an ancient Chinese

Q74: What is a planetary nebula?<br>A) Gas ejected