Why are there different levels of radioactive waste?

Different levels of radioactive waste exist due to the varying degrees of radioactivity and the potential harm they pose to human health and the environment. Waste is typically categorized as low-level, intermediate-level, or high-level based on its radioactivity, heat generation, and the duration of its hazardous effects. Low-level waste, such as contaminated clothing or medical waste, has relatively short-lived isotopes and is less harmful, while high-level waste, like spent nuclear fuel, contains highly radioactive isotopes that remain dangerous for thousands of years. This classification helps determine appropriate storage, handling, and disposal methods to ensure safety and minimize risks.