Hello!
When hydrogen runs out in a star, it can no longer perform nuclear fusion where hydrogen nuclei combine to create helium. This will stop fusion.
Hope this helps!
Answer:
Using phones is messing with the ozone layer
Explanation:
Answer:
Hemoglobin is a protein (because it's a molecule that's not a living part of the cell but aids in cell processes).
<span>dense; expanding is the one</span>
