temperature/pressure needed to start reaction.
nuclear fusion
Fission. Fusion has never been used on Earth, except for nuclear weapon tests.
The process generating solar energy is one of nuclear fusion.
The benefit of nuclear fusion is its potential to provide a virtually limitless and clean energy source with minimal environmental impact. One thing nuclear fission and nuclear fusion have in common is that they both involve the release of energy by altering the nuclei of atoms, although through different processes.
Nuclear fusion. This process releases a large amount of energy due to the conversion of mass into energy as per Einstein's equation E=mc^2. Fusion reactions are the primary source of energy in the sun and other stars.
nuclear fusion
Neither, a CAT scan is one where computers are used to synthesise an image, but the radiation used is usually X-rays, though positron emission can be used, in this case it will be using appropriate radiation sources. Fusion and fission don't come into it.
One potential negative effect of nuclear fusion is the production of radioactive waste. While fusion produces less long-lived radioactive waste compared to fission, the materials used in the reactor can become activated and need to be safely managed and stored.
Because no one has been able to produce a continuous fusion reaction so far.
The one who created everything in the Universe
they have never built one
Nuclear fusion is the joining of two or more nuclei into one nucleus (apex) CORRECT ANSWER!!!!!!