The diagram represents liquid water in a pan on a hot plate. The liquid water is boiling and changing into water vapor. The process of boiling water is considered to be a

I guess c?

Explanation:

take my answer by a grain of salt but the process of boiling water leads to physical change because eventually all water will become water vapor if boiled long enough

idk

explanation:

dasdad

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).