Substance B is hard, does not conduct electricity, and melts at 1200 °C. Substance B is likely a(n): (a) ionic solid
(b) metallic solid
(c) molecular solid
(d) covalent network solid

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

hope it

a small container that holds a source of energy a solar cell that captures light energy and converts it into electricity a voltaic cell that uses the oxidation of a fuel to produce electricity

explanation:

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