(a) Write an equation for Verhulst Pearl logistic . Growth where
N = Population density at a time t
r = Intrinsic rate of natural increase
K = Carrying capacity
(b) Draw a graph for a population whose population density has reached the carrying capacity .
(c) Why is the logistic growth model considered a more reallistic one for most animal populations ?
(d) Draw a growth curve where resources are not limiting to growth of a population.

Explanation

(a) Density equation = `(dN)/(dt) = r N ((K-N)/(K))`
(b and d )
(a) When responses are not limiting the growth .
(b) When responses are limiting the growth . K = Carrying capacity .
(c) The resources for growth for most animal populations are finite and become limiting sooner or later . This is why the logistic growth model is considered a more realistic one.