In the sun, mostly. Humans don't built fusion reactors because we haven't yet figured out how to get more energy out of the process than we put into it.
Human nuclear power generation is fission-based.
Fusion also occurs in modern nuclear bombs, although this is an uncontrolled reaction and not one that can produce useful power.
How can temperature either help fusion to occur or prevent fusion from occurring?
No, nuclear fusion does not occur in the convection zone of a star. Fusion reactions primarily take place in the core region of a star, where the temperature and pressure are high enough to sustain the nuclear reactions that power the star. The convection zone is a region of the star where heat is transported through the movement of gas, but fusion does not occur there.
Fusion occurs in the sun.
Fusion occurs in the sun.
Fusion occurs in the core of the Sun
The temperature required for nuclear fusion to occur is around 100 million degrees Celsius.
Fusion occurs in the core of the sun and other stars.
heat and pressure
Because the conditions of temperature and pressure that occur in stars do not occur on earth
nuclear fusion is not a natural occurrence, it is when two atoms are fused together
No. A white dwarf is the remnant of a star in which fusion as stopped.
Hydrogen fusion does not occur in the corona of the sun. Fusion reactions occur in the sun's core where conditions are hot and dense enough for hydrogen nuclei to combine to form helium, releasing energy in the process. The corona is cooler and less dense than the core, so fusion cannot take place there.