It would be the nuclear membrane
Hi there! Hopefully this helps!
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The answer to your question is the second sentence:
<em> </em><em>Atoms</em><em> in the star </em><em>begin to combine.</em>
<u><em>Answer:</em></u>
<u><em>Combustion</em></u>
<u><em>Explanation:</em></u>
<u><em>The step in the carbon cycle didn’t really exist before the industrial revolution was Combustion</em></u>
<u><em /></u>
<u><em>please mark me brainliest <3</em></u>
