Ais a process by which atoms change their ion charge.

displacement
redox
substitution
combustion

Redox: involve the transfer of electrons between two chemical species. The compound that loses an electron is said to be oxidized, the one that gains an electron is said to be reduced. There are also specific terms that describe the specific chemical species.

Substitution:A substitution reaction is a type of chemical reaction where an atom or functional group of a molecule is replaced by another atom or functional group.

Combustion: a chemical reaction chemical that occurs between a fuel and an oxidizing agent that produces energy, usually in the form of heat and light.

So it is Redox

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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.

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the study of the surface of a large voluptuous cock.

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cock topography!