Answer: buried underground
Step-by-step explanation:
Radioactive waste is a waste that exhibit radioactive material. It includes the products of nuclear reactors and radioactive elements like uranium, radium, and polonium . The radiations emitted by these wastes are likely to cause mutations in living beings which produce adverse symptoms and may also cause explosion when the radiations come in contact with air. Therefore, these wastes are required to be buried underground so that the radiations from these wastes may not leak out and cause hazards.