In eukaryotes, gene regulation occurs at the level of transcription with the of certain regulatory proteins. which proteins encourage binding of the rna polymerase to the promoter? select one of the options below as your
a. activator
b. enhancer
c. silencer

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. 

Other organisms can change their behavior to take the place of the plants in the ecosystem.