Is iron found in all living organisms? Its also found in the Sun (in a small amount) - Why is it found in the Sun?
by 
Amit Singh
ANSWERS: 1
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Iron is the heaviest element produced via fusion in a star. However, I did NOT believe that the sun was large enough to do so.. In essence, it's just a series of fusions, starting with hydrogen. Hydrogen fuses with another hydrogen to form helium. Eventually, the core becomes "Hydrogen depleted", and the Helium begin to fuse. It'll fuse into Carbon, and Oxygen. this process continues, creating bigger, and bigger elements, until Iron is produced. However, more heat is required to fuse Oxygen than helium, and helium than hydrogen, so only the biggest stars can create Iron. Here's some more information: http://herschel.jpl.nasa.gov/chemicalOrigins.shtml And, about the living organisms question: Yeah, I think so... Biology is NOT my forte.
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