Answer: Two hydrogen nuclei come together to produce one helium nucleus and two protons, and energy is released.
Explanation:
All stars (including the Sun) at birth begin to fuse two hydrogen nuclei to form helium through nuclear fusion.
In this sense, nuclear fusion is the union of two light atoms, releasing energy in the process, which is the cause of the great luminosity of a star. Especifically, the hydrogen nuclei will begin to fuse, generating helium nuclei in the process and releasing huge amounts of energy.
To unerstand it better:
To shine, the stars transform their hydrogen into helium by means of nuclear fusion. When at half of its life a star is without hydrogen, the nucleus becomes entirely helium and the star declines, becoming colder and brighter due to the energy generated by the nuclear reactions, then the star begins to contract.
Nevertheless, if the star is bigger, this helium will be also consumed and the nucleus transformed in Carbon, then in Oxigen, and so on. Being the last transformation Iron until the star delivers all its energy.
1. (A) Isthmus
2. (A) people can work easily in other European union countries.
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Rwanda (4) was the site of ethnic tensions and a civil war between the Hutu and the Tutsi in the 1990s. In early to middle 1994, the Hutu ethnic majority murdered nearly 800 thousand people, mostly from the Tutsi minority group. The act of attempting to annihilate an ethnic minority by an ethnic majority is known as a genocide. In Rwanda, the genocide began in the capital city of Kigali and spread throughout the rest of the country with lightening speed. It was a brutal and violent period in Rwandan history.
The subtropical jet streams formate from cool and warm air masses that meet near the equator (close to the 30* Latitude).
