Question

Why are spectral lines useful in classifying stars?(1 point) Responses They show the layers that make up a star. They show the layers that make up a star. They show a star's location. They show a star's location. They indicate a star's age. They indicate a star's age. They show the composition of a star.

Answer 1

Spectral lines are useful in classifying stars because they show the composition of a star.