Carl Sagan says this because when a star explodes different elements are formed and these include hydrogen and helium. Which can be built into carbon, nitrogen, and oxygen that is made up of our bodies.
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Sorry I don’t know the answer w times 2? The following
Answer:
(Why) Even though I just met you why?
Explanation:
The question being tested is whether or not the human body will produce more red blood cells at higher altitudes.
The hypothesis an athlete would create from this question is that the body will produce more red blood cells at a higher altitude to ensure the pumping of oxygen throughout the body.
