explain how a fusion reactor would be similar to a fission reaction
In my understanding, this is because a fusion reactor reacts deuterium to produce helium, which is not radioactive, whereas a fission uses uranium or plutonium, for example, which may react to form various radioactive isotopes. A fusion reactor may contain small quantities of tritium, in which case a radioactive isotope of hydrogen may be produced, but given that the majority of reactions occurring involve solely the deuterium, there is less radioactive waste produced.
Deutrium and tritium are needed as fuel in fusion reactor.
Plenty of cheap fuel, and no radioactive waste.
fission
A fusion reactor is a type of nuclear reactor, one which fuses hydrogen atoms into helium atoms, as opposed to a fission reactor (by far the dominant source, and the only one used to commericaly generate power), which spilts uranium or plutonium atoms (mostly these two). Both use these reactions to generate heat, turning water to steam which then drives and turbine, which in turn drives a generator, creating electricity.
You must realise that any claimed advantages are based on scientists predictions, and to some extent wishful thinking, as it is not even determined in engineering terms how a nuclear fusion plant could be built, what materials could be used, and how the heat would be extracted. However ever since fusion was proposed, scientists have been pointing out that it would produce much less radioactivity than fission does, and this is true, there would not be the spent fuel containing very highly active fission products that fission produces. There would be activation of structures in the plant due to the neutron irradiation coming from the plasma undergoing fusion. There are also consequences from needing to produce the tritium fuel, which is a dangerous substance to human health. So it all depends on future progress with ITER and further test rigs, but at the moment it is academic since it is very unlikely to happen within this century.
A physicist
Fusion would be much safer because it does not produce the very dangerous fission products that fission power does. However for the present time there is no way of using fusion power, it is just a possibility for the distant future.
Fusion is bringing two lighter nuclei together and make it one heavier nucleus. Fission is breaking a heavier nucleus and two lighter nuclei are formed. Fusion is going on in the Sun and Stars. Fission is taking place in nuclear reactor In case of fusion no chance of getting harmful radiations, hence known as clear energy. But energy produced per one fusion will be very low and that will be nearly 25 MeV. But fission gives out radioactive materials and so they would give out harmful radiations. But energy per fission will be appox 200 MeV. Hydrogen bomb is an example for fusion process Atom bomb is an example for fission process.
maybe
No way has yet been found to reach break-even in a controlled fusion reaction and get as much energy out as was needed to put in to start the reaction. To make a reactor you need to go past break-even and release extra energy.
A fusion reactor that needs more energy than it produces would not be economically viable or practical for power generation. The purpose of building a fusion reactor is to generate more energy than it consumes, in order to provide a sustainable and efficient source of power. If it cannot achieve this goal, it defeats the purpose of investing in fusion energy technology.