Put the steps of the nitrogen cycle in order, starting with the step that
removes nitrogen from the atmosphere.
*
nitrogen moves from soil to plant material.
†
nitrogen molecules are split apart.
t1 gaseous nitrogen is released.
t dead animals decompose.

The rate that would change would be the  searching efficiency/attack rate. there are only two other rates in this model: the  growth rate of prey, and the  predator or consumer mortality rate.the  searching efficiency/attack rate is what indicates how effectively can a predator capture its prey whether in the searching process or actual capturing/attacking process. 

The answer is hilum.