If the star is receding, the pattern moves to longer, redder wavelengths. This is called redshift. Edwin Hubble used the Doppler effect<span> to determine that the universe is expanding. ... This red shift indicates that stars are moving away from us and from each other.</span>
Aluminum is a shiny, silvery white colored metal that is light in weight and strong.
You forgot to add the answers but a non living factor that could contribute could be something like temperature.
I believe the answer is 3.
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