Final answer:
Radioactive materials can decay over time. Licensees hold RAM in storage to allow it to decay to a safe level before disposal.
Step-by-step explanation:
In the field of chemistry, radioactive materials (RAM) can decay over time. When a licensee holds the RAM in storage, they are typically waiting for the material to decay to a safe level. The length of time required for this decay will depend on the specific radioactive isotope being dealt with. Once the RAM has decayed to an acceptable level, it can be properly disposed of according to radioactive waste regulations and guidelines.