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Where did the earth get all of the heavy elements that it is made of?

User J Pollack
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Answer:

Heavy elements were cooked up in the core of stars during fusion reaction. But elements heavier than Iron were made in supernovas. Our solar system and sun is a third generation star and its planets.so heavy elements came to earth from a past supernova which happened before the formation of earth

Step-by-step explanation:

User Doogie
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