Carbohydrates require a prolonged process of digestion in order to be broken down into glucose and maintain proper blood sugar levels.
a. complex
b. simple

Idon't know how to do this but maybe ask your mom or dad

Ithink its because more have died recently than in the past.

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.