What Are Population Growth Models? | UPSC Economy

Population Growth is one of the major concerns of the world. Right now, there are 8 billion people on this planet, and it is growing at a very alarming rate. During all this population growth, the resources of the earth remain constant and nature has a way to balance everything at the right time. 

There are two growth models that describe the growth in the population. 1)Exponential Growth 2)Logistic Growth

1)Exponential growth is something in which there is an unlimited supply of food and resources, and the population growth follows an exponential order. It takes place when a population’s per capita growth rate stays the same regardless of the population size. It makes the population grow faster and faster and it gets larger.

2)On the other side, Logistic Growth defines the survival of the fittest concept. It considers the fact that resources in nature are perishable. It takes place when the population’s per capita growth rate decreases but the population size approaches a maximum imposed by the resources. 

The carrying capacity defines the limit of the resources beyond which they cannot support any organisms. 

It is important that we maintain good natural resources of the planet because as the population keeps growing there are high chances of resources getting damaged and survival of the fittest will be the only option left

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