. Stella thinks that if people are exposed to ultraviolet light then they are more likely to get skin cancer. Stella designs an experiment where in sample A consisted of people who were exposed to ultraviolet light and sample B consisted of people who were not. Control Group-

Independent variable –

Dependent variable – Skin cancer

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt