Explain in detail one concept of molecular transport you found to be easily understood, Explain in detail one concept of molecular transport you found
hard to understand with examples of how to make that concept easier to
learn

That is true! many fish species traveled to the u.s. because of it.

Average growth population growth

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.