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A A population has just begun to grow
Answer:
As stars age, they run out of hydrogen to burn, decreasing the amount of energy they emit. Thus, younger stars can appear bluer while older ones appear more red, and in this way, a star's color can tell us something about that star's age.
Explanation:
Answer: not sure what exactly your asking for
Explanation:
The probability of having the first child with long ear lobes is half