Clonidine is the generic name of Catapres, a medication used to treat high blood pressure. Clonidine works by slowing down your heart rate and relaxing blood vessels. You can take clonidine alone or in combination with other medications to lower blood pressure. Clonidine is in a class of medications called centrally acting alpha-agonist hypotensive agents.
This means there is a relationship between the two events, hours worked and income and also that a change in one event (hours worked) causes a change in the other (income). This is causation in action! Causation indicates a relationship between two events where one event is affected by the other. In statistics, when the value of one event, or variable, increases or decreases as a result of other events, it is said there is causation.
then it is the gene that causes both of them. So this is what the causation part is about. If you're way ahead of me, then enter causation in algebra into your search engine of choice, and knock yourself out on philosophy, teleology, and stuff.