Which variable is the difference between the control and experimental group?

The only difference between the control and the experimental group is the independent variable.

The control group receives no treatment, or a constant independent variable. The experimental group receives a treatment, which is the altering of the independent variable.

Hopefully I helped :)

the answer would be c

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?