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Describe an alternative to counterbalancing as a means of controlling confounding variables.
Fossil-fuel Processing Industries
Industries involved in the refinement and conversion of fossil fuels into usable products such as gasoline, diesel, and other energy sources.
Breeder Nuclear Fission Reactors
A type of nuclear reactor that generates more fissile material than it consumes, creating a sustainable nuclear fuel cycle.
Uranium-238
A naturally occurring isotope of uranium, accounting for 99% of natural uranium, which is weakly radioactive and used as a source of nuclear fuel.
Plutonium-239
A radioactive isotope of plutonium, used as a key component in nuclear weapons and as a fuel in some types of nuclear reactors.
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