What element are the cores of massive stars made of when a supernova occurs? A. silicon B. iron C. oxygen D. neon

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The cores of massive stars are made of IRON when a supernova occurs.

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Asked 1/23/2013 3:38:33 PM

Updated 4/26/2016 11:57:14 AM

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Edited by Janet17 [4/26/2016 11:57:12 AM], Confirmed by Janet17 [4/26/2016 11:57:14 AM]

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Which effect can be traced directly to the Supreme Court's ruling in Plessy v. Ferguson? A. Lynching of African Americans continued into the 1920s. B. Race riots broke out in New York and other large cities. C. Southern blacks lost their voting rights for 60 years. D. Racial segregation was permitted for nearly 60 years.

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