Based on observations, which of the following statements about stars in the Milky Way is generally true?

Question

Quizplus · Accepted Answer

This is known as the age-metallicity relation, which states that older stars have a lower abundance of heavy elements (elements heavier than helium) because they were formed when the universe had less heavy elements. Younger stars have a higher abundance of heavy elements because they were formed from material enriched by previous generations of stars.

Based on Observations, Which of the Following Statements About Stars