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What two things are used to classify stars on the HR diagram?

A. Temperature and luminosity/brightness
B. Color and shape
C. Shape and Size
D. Age and color

User Thiagoss
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1 Answer

1 vote

Answer:

A

Step-by-step explanation:

In the HR diagram, temperature and luminosity (brightness) are used to classify stars. I hope this helps!

User Mr Grumpy
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