Why are e slides considered to be temporary microscopic slides?

E slides are considered temporary microscopic slides because they are typically made for short-term use, often created for a specific observation or experiment. They are usually prepared with a quick mounting medium that allows for easy viewing but does not preserve the specimen for long-term storage. Once the observation is complete, the slides are often discarded or dismantled, contrasting with permanent slides that use durable mounting media and methods for long-lasting preservation.