4. What is an insulating layer around some axons in the brain and what is it made of? A. myelin; Schwann cells

B. myelin; amino acids

C. astroglia; Schwann cells

D. oglioglia; neurons

I’ll give brainiest:)

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. 

Movement of earth’s crust creates low areas that fill with water. also streams flow into shallow areas.