A. Name the two growth models that represents population growth and draw the respective growth curves they represent.
B. State the basis for the difference in the shape of these curves.
C. Which one of the curves represent the human population growth at present? Do you think such a curve is sustainable? Give reason in support of your answer.
Answers
Answer:
A.graph
B.line
Population growth model
Explanation:
A.(i) Exponential growth : When tire resources are unlimited, population tends to grow in an exponential pattern.
(ii) Logistic Growth : When the resources are limited leading to competition between individuals and survival of fittest, the population tends to grow in a logistic manner.
B. The difference in the shape of these curves is the amount of resources available for the given population. For exponential growth, the amount of resources is considered infinite, while, logistic growth happens when there are limited resources.
c. The human population represents the logistic growth curve as the numbers of human beings are increasing rapidly but available resources are not increasing at the same pace. Such a growth pattern is not sustainable because at one point the human population would reach a place where there would not be enough resources for everyone. For sustainable growth, we must find out ways to develop and use already present resources more intelligently.