Answer :
Final answer:
The primary energy source in the Sun is nuclear fusion, converting hydrogen to helium, releasing energy. Nuclear fusion is a crucial process that powers the Sun and all life on Earth.
Explanation:
The primary source of energy in the Sun is nuclear fusion, where hydrogen nuclei fuse to form helium nuclei. This process occurs at a solar-core temperature of 14 million kelvin, resulting in the conversion of mass into energy.
Nuclear fusion in the Sun generates a significant amount of energy, with a net reaction involving the fusion of four protons into one alpha particle, releasing energy, positrons, and neutrinos in the process.
Overall, nuclear fusion is a crucial process that powers the Sun and serves as the ultimate source of energy for all life on Earth, including humans.
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