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bromonox bromonox
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8 years ago
Heavy elements like Pb (lead) and U (Uranium) were generated ________.
A) during collapse of a star and subsequent nuclear synthesis in a supernova
B) during the big band when the universe was formed
C) by humans in nuclear reactors
D) by the Sun and expelled to the solar system via the solar wind
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Earth Science

Earth Science


Edition: 14th
Authors:
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PulsaPulsa
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8 years ago
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bromonox Author
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#2
8 years ago
Grazie! (means thank you in Italian Face with Stuck-out Tongue)
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#3
3 years ago
thanks
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#4
3 years ago
thanks
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#5
3 years ago
thanks!
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