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Light and heat waves
They both are electromagnetic & can travel through vac., sound waves does not include in EM Spectrum
So, option A is your answer.
Hope this helps!
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The white dwarf will be surrounded by an expanding shell of gas in an object known as a planetary nebula. They are called this because early observers thought they looked like the planets Uranus and Neptune. There are some planetary nebulae that can be viewed through a backyard telescope. :) I hoped this helped !
During The DNA Replication?
