Originally Posted by Neapolitan

Supernovae are responsible of creating the higher mass elements (greater than Fe) and even though a very tiny small amount of those elements are found in a human being, how important they are only one can guess - here's a list:
1. Oxygen (8) - (65%)
2. Carbon (6) - (18%)
3. Hydrogen (1) - (10%)
4. Nitrogen (7) - (3%)
5. Calcium (20) - (1.5%)
6. Phosphorus (15) - (1.0%)
7. Potassium (19) - (0.35%)
8. Sulfur (16) - (0.25%)
9. Sodium (11) - (0.15%)
10. Magnesium (12) - (0.05%)
11. Copper (29), Zinc (30), Selenium (34), Molybdenum (42), Fluorine (9), Chlorine (17), Iodine (53), Manganese (25), Cobalt (27), Iron (26) -- (0.70%)
12. Lithium (3), Strontium (38), Aluminum (13), Silicon (14), Lead (82), Vanadium (23), Arsenic (33), Bromine (35) -- (trace amounts)

Anyway if you follow the cause and effect of everything on Earth happening now you could go back in time following the sequences of causes and effects, and still further back in deep time to the formation of the Earth and and you could trace further back the early foundation of this solar system you could go back to a supernova. Everything we know is dependent on a supernova, it is important for the creation of the solar system, and the creation of an inhabitable planet like Earth. Hypothetically without those higher mass elements an Earth-like planet would (if it ever could form without a previous supernova taking place) would have cooled off a lot sooner. And that Earth-like planet would be like a Mars-like planet without any Teutonic plate movements, and subsequently that would change the whole outcome of evolution and ultimately change the whole course of history, there would be no monkeys turning into human being pondering questions of life like "Where do we come from?" etc etc