1. how is nuclear power different from power generated by fossil fuel combustion? nuclear power produces much less carbon dioxide gas to the atmosphere. nuclear power does not require mining and disruption of the land. we have fewer supplies of nuclear fuel than we have of fossil fuels. 2. almost all nuclear waste is categorized as low-level waste transuranic waste high-level waste 3. the front end stage of the nuclear fuel cycle involves the mining and enrichment of uranium placement of fuel assemblies in the reactor core disposal of nuclear waste 4. which of the following is used as a moderator and to carry away excess heat in a nuclear reactor? water carbon dioxide gas uranium 5. control rods can be taken away from a nuclear reactor to make the fission reaction take place at lower temperatures convert to a fusion reaction go faster