The correct answer to this open question is the following.
Although you did not include the article or a link to it, we can comment on the following general terms.
The controversy between the two terms in the area of Psychology stems from de debate if the behavior in humans is inherited by the parents or it is acquired when the individual starts to socialize. This means that the two schools of thought are debiting on the idea of if the behavior is learned or if it is the product of the genetic.
So Nature for scientists is the information that is conveyed by genetics and is passed from parents to children. Here, biology and chemistry play a major factor.
On the other hand, Nurture can be understood as environmental factors that the individual is exposed to when it receives the external influence and starts to learn new things and how to react to these external influences.