The is the part of the brain that is responsible for the formation of new long-term declarative memories.

The answer would be the hippocampus it is responsible for the formation of the nerves to make long-term memories.  

The answer is c i just finished taking the test

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.