Dormancy is a state of reduced metabolic activity that allows organisms to survive periods of unfavorable environmental conditions, such as extreme temperatures, lack of food or water, or other stresses.

Here are some examples of dormancy:

* Hibernation: A state of deep sleep that occurs in mammals during the winter, when food is scarce and temperatures are cold.

* Aestivation: A state of inactivity that occurs in some animals during the summer, when temperatures are hot and dry.

* Diapause: A state of suspended development that occurs in insects, often triggered by changes in day length or temperature.

* Seed dormancy: A state of inactivity in seeds that allows them to survive until conditions are favorable for germination.

Dormancy is a key adaptation that allows organisms to survive in a variety of environments and is essential for the survival of many species.