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## Difference Between Exponential Growth and Logistic Growth

Exponential Growth vs Logistic Growth

Exponential growth and logistic growth are terms that have been related to population. Exponential growth is that which exists when the growth rate is proportional to existing amounts. In logistic growth also, the growth rate is proportional to the amount but also includes limited resources and competition.

Certain ideal conditions are required for exponential growth. But logistic growth is not related to any ideal condition. In logistic growth, the rate of growth is faster in the beginning and slows down later as several individuals are seen competing in a limited space. When the population reaches the equilibrium state, the growth rate is zero. If no interruption takes place, then the population will remain constant.

A population which has unlimited access to various resources will grow exponentially. Unlike the logistic growth, exponential growth starts slowly and then gets faster as population increases.

Exponential growth happens when there is a continuous birth rate in a period of time and it is not hindered because of the scarcity of food and a lot of diseases. For example, a bacterium divides into two which will result in two bacteria. These 2 further divide which results in 8 and then 16 and 32 and likewise. This process will continue till the resources run out or become scarce.

There are various restrictions, like lack of food, presence of diseases and predators which can restrict the growth of the population. The population reaches an upper limit where the environment can no longer support it. This growth can be called as logistic growth where the population increases exponentially and reaches a point where the resources become insufficient.

In exponential growth, there is no upper limit. But in logistic growth, the growth is limited. When comparing the two growths, logistic growth is considered more realistic than exponential growth.

Summary:

1. Exponential growth is that which exists when the growth rate is proportional to existing amounts.
In logistic growth also, the growth rate is proportional to the amount but also includes limited
resources and competition.

2. In logistic growth, the rate of growth is faster in the beginning and slows down later as several
individuals are seen competing in a limited space. But exponential growth starts slowly and then
gets faster as the population increases.

3. In exponential growth, there is no upper limit. But in logistic growth, the growth is limited.

4. Exponential growth happens when there is a continuous birth rate in a period of time and it is not
hindered because of the scarcity of food and a lot of diseases.

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