Which phrase describes the relative age of a rock?

Uses the law of superposition to determine which rock is older or younger.

Explanation:

Relative age refers to the age of the rock when compared to other rocks. The law of superposition was developed by Nicholas Steno. In this process, you determine which rock layer is older or younger in terms of the sequence they were laid out or layers were formed. This law states that the lower the layer, the older the rock layer is as compared to those on top of it.

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.

the answer to you question is   jet streams