Questions Choice and Concern

Why does the human population continue to grow exponentially?

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Meghana Chauhan

Trust the timing of your life

The growth of human population is around 75 million every year and is expected to keep growing. There have been different opinions on whether it will continue to grow or it will saturate after some time. The growth rate has seen quite a decrease in different regions of the globe in recent years.

Many of the current environmental issues can be attributed to the population growth as with more and more people on earth; the renewable resources are diminishing faster. However what causes this explosion in population?

Before delving further into the population growth, let us first understand what exponential growth means and how it differs from the linear growth.

Linear and Exponential growth

We often consider growth as a linear factor where a constant amount gets added to the existing amount over some time. In this growth process, there is no influence of the existing number on the new addition.

This is not the case with the exponential growth though. In the case of exponential growth, the increase in number is proportional and related to the existing amount. Multiple factors govern the growth in population, and hence it is not just an increase in number or doubling of the existing amount. There are factors like fertility rates, mortality rates, etc. which have a bearing on the population figures.

Factors causing the growth of population

  • From the time man discovered agriculture for sustenance and stopped hunting, there has been an imbalance between the death and birth rates, which causes a steady increase in population.
  • Thanks to technology, science, and medical facilities have grown so well that there are a cure and vaccine for every disease, a direct impact on the death rate.
  • The fertility treatment options are also another cause which resulted in an increasing birth rate, making pregnancies much safer.
  • Lack of proper family planning, the illiteracy percentage in the population is another reason for the growing population.
  • If you look at the population growth over the years, you will find that while the birth rate has been considerably low, the population has continued to increase rapidly. This is due to the lower death rate, which was constantly reducing even more than the birth rate. In recent years though, especially after 1965, the birth rate has been decreasing rapidly too. 


Marcelina collins

Every moment is a fresh beginning

Increase in population growth has become a major problem in today’s time. The matter has become so serious that the government in some countries are forced to limit the number of children you can give birth to.
We have only limited resources to support our lives on earth. Most of these resources are non-renewable. An increase in population will only deplete the resources fast.

Reasons behind population growth
There are many reasons why the world’s population is growing exponentially. Some of the major causes include the following:
1. High birth rate
The number of birth rates has increased to a great extent in the last few decades. This is one of the main causes behind the tremendous increase in population. In countries like India and China, the birth rate is the highest. To put a check on the high birth rate, China's government has put a limitation on the number of children you can take.
2. Decreased death rate
The average life span of a human is supposed to be 70 years. However, that is not the case anymore. The advancement made in the medical field has increased the life span of human beings. Today, an average human life span is about 85 to 90 years. The increase in birth rate and the decreasing death rate have caused a major imbalance in the earth resources. If this continues to go on, there will be no resources left to support life on this planet. Therefore, we need to take precautionary steps to avoid such grave danger.
Considering the world’s population's given condition, we must take the necessary steps to bring it under control. If nothing is done, the future of our children and grandchildren will be in danger.

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