Every element with more protons than ______ is formed from a supernova explosion*1 pointHydrogenHeliumCarbonIron

Within the first three minutes of the universe, which elements were formed?*1 pointHydrogenHeliumLithiumCarbonJust protonsNone of the above

What is the heaviest element directly produced by nuclear fusion in the core of high-mass stars?Group of answer choicesHeliumIronSiliconNickelCarbonGold

What event is believed to create elements heavier than iron?a supernova explosionthe formation of a neutron star    the accretion of matter into a black holea nova outburst

A nova or supernova Type 1A explosion can form from the last "bang" of a*1 pointred giantwhite dwarfblack dwarfneutron starred supegiant

Which of the following elements is present in protein?*1 pointoxygenNitrogencarbonOption 5hydrogen