What is the difference between a physical and a chemical change

a physical change is something that happens to the object like being cut, broken, bent, or torn. a chemical change is what happens when you bond on material with another. like burning paper or cooking food.

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.