Essay on population growth
Answers
Answer:
Introduction:
There are currently 7.7 billion people on our planet. India itself has a population of 1.3 billion people. And the population of the world is rising steadily year on year. This increase in the population, i.e. the number of people inhabiting our planet is what we call population growth.
One important feature of population growth is that over the last century it has shown exponential growth. When the pattern of increase is by a fixed quantity, we call this linear growth, for example, 3, 5, 7, 9 and so on. Exponential growth shows an increase by a fixed percentage, for example, 2, 4, 8, 16, 32 and so on. This exponential growth is the reason our population has seen such an immense increase over the past century and a half.
Causes of Population Growth:
To fully understand the phenomenon, in this essay on population growth we will discuss some of its causes. Understanding the reasons for such exponential growth will help us better understand how to plan for the future. So let us begin with one of the main causes, which is the decline in the mortality rate.
Over the last century, we have made some very significant and notable advancements in medicine, science, and technology. We have invented vaccines, found new treatments and even almost completely eradicated some life-threatening diseases. This means that people now have a much higher life expectancy than their ancestors.
Effects of Population Growth:
This exponential population growth that our planet has experienced over the last 150 years has had some severe negative effects. The most obvious and common impact is that overpopulation has put a great strain on the natural resources of the earth. As we know, some of the resources available to us come in limited quantities, for example, fossil fuels. When the population explosion happened, these resources are becoming rarer and will one day run out completely.
The increased population had also lead to increased pollution and industrialization. This has adversely affected our natural environment leading to more health problems in the majority of the population. And as the population keeps growing, the poorer countries are running out of food and other resources causing famines and various such disasters.