Assume you have a sealed jug that only contains air. if you heat the air in the jug it will have a higher temperature. what are other properties of air will change?
a: air volume
b: air density
c: air composition
d: air pressure

maybe the spark is gone, love is a weird emotion and there is a possibility he may have found somebody else.

answer; /// i do believe that the correct answer is (c)nuclear bond

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%).