Here are some examples of how "strato" is used:
* Stratosphere: The layer of the atmosphere above the troposphere and below the mesosphere.
* Stratovolcano: A cone-shaped volcano built up by many layers of lava flows and ash.
* Stratification: The process of arranging something in layers.
* Stratigraphy: The branch of geology that studies rock layers and their sequences.
The meaning of "strato" depends on the context, but it generally refers to something that is arranged in layers.