Skin cancer is a dependent variable whereas Ultraviolet is an independent variable because it does not depend on the skin cancer but the skin cancer depends on it.
Hypothesis: If Ultraviolet radiations falls on the skin, Then skin cancer occurs because Ultraviolet rays causes cancer by mutation in the cell.
What causes skin cancer in humans?
If the Ultraviolet radiation touches the skin then it causes skin cancer because the Ultraviolet rays causes change in the genetic structure of the skins cells and cause mutation.
So we can conclude that Skin cancer is a dependent variable whereas Ultraviolet is an independent variable because it does not depend on the skin cancer but the skin cancer depends on it.
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