Population growth essay in english simpale
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The population is currently growing at the rate of 76 million people per year. This rate is equivalent to adding to the world every year according to the latest survey reports the population growth is occurred as medium projection predicts that population will pass the 7 billion mark in 2012, trillion marks in 2024, and the 9 billion mark in 21 will reach 9.1 billion in 2050. (Fig. 10.3).
A population is the number of individuals of a given species within a specified area or habitat. In ecology, the study of population dynamics forms an important sub-field known as population biology. Population studies have been used in projecting the population has been an issue of debate.
Scientists predict that human populations grow at faster rate lead to catastrophe due to which billions of people die. Center scholars think that current trends may not lead to disaster and find a reasonable and stable population level.
Populations increase through reproduction but they do not increase infinity because of environmental limitations including disease, predation, confection for space and nutrients and nutrient shortage. These various limit to population growth are collectively concept of this resistance is the carrying capacity i.e., the maximum number of individuals a habitat can support.
When population exceeds its environment’s carrying capacity, nutrients shortages may weather the individuals, reduce reproduction, and increase death rates, until the population falls below its maximum size of population. Its environment’s carrying capacity, it is said, to overshoot its environment’s capacity.
It’s maximum. In many cases populations undergo repeated overshoot-dieback cycles, Sometimes these cycles gradually decrease until a stable population is reached with equilibrium in carrying capacity. As the population grows, the number of breeding adults increases so that growth accelerates. Increases at a constant accelerating rate of change is known as exponential growth. Generally more stable populations are desirable.
The rapid growth of population is perhaps the most obvious factor affecting the present and future national and regional development, but it is by no means the only population problem in the world today. The main problem is that of ‘Population Explosion’.
Population explosion is a sudden spurt in the rate of population growth that occurs in the second stage of demographic transition due to a rapid fall in the mortality rate without a corresponding fall in the birth rate. According to Theory of Demographic Transition, every country passes through three stages of demographic transition. In the First stage, both birth and death rates are high and hence population remains more or less stable.
The main features of this stage are backward economy where agriculture is the main occupation, low per capita income, low standard of living, inadequate and unbalanced diet, absence of educational opportunities and presence of social evils like polygamy, early marriages etc.
In the second stage, there is rapid growth of population. With the beginning of process of development, the living standards of people improve, education expands/ medical and health facilities increase as a result of which death rate comes down.
But as long as society remains primarily agrarian and education remains confined to a narrow section of the society, attitude of the people towards the size of the family not change radically and the birth rate remains high. In this situation, population increases at an alarming rate. If in a country the process of industrialization accompanied by urbanization is not fast and education is not widespread, then this is really a grave situation. This is called Population Explosion.
The effects of population explosion are numerous with far reaching consequences. Some of them are unemployment, low living standard of people, hindrance in the process of development of economy, pressure on agriculture land, low per capita income, lack of basic amenities like water supply and sanitation, education, health, etc., high crime rate, environmental damage, migration to urban area in search of job, energy crisis, Overcrowding of cities leads to development of slums.
A population is the number of individuals of a given species within a specified area or habitat. In ecology, the study of population dynamics forms an important sub-field known as population biology. Population studies have been used in projecting the population has been an issue of debate.
Scientists predict that human populations grow at faster rate lead to catastrophe due to which billions of people die. Center scholars think that current trends may not lead to disaster and find a reasonable and stable population level.
Populations increase through reproduction but they do not increase infinity because of environmental limitations including disease, predation, confection for space and nutrients and nutrient shortage. These various limit to population growth are collectively concept of this resistance is the carrying capacity i.e., the maximum number of individuals a habitat can support.
When population exceeds its environment’s carrying capacity, nutrients shortages may weather the individuals, reduce reproduction, and increase death rates, until the population falls below its maximum size of population. Its environment’s carrying capacity, it is said, to overshoot its environment’s capacity.
It’s maximum. In many cases populations undergo repeated overshoot-dieback cycles, Sometimes these cycles gradually decrease until a stable population is reached with equilibrium in carrying capacity. As the population grows, the number of breeding adults increases so that growth accelerates. Increases at a constant accelerating rate of change is known as exponential growth. Generally more stable populations are desirable.
The rapid growth of population is perhaps the most obvious factor affecting the present and future national and regional development, but it is by no means the only population problem in the world today. The main problem is that of ‘Population Explosion’.
Population explosion is a sudden spurt in the rate of population growth that occurs in the second stage of demographic transition due to a rapid fall in the mortality rate without a corresponding fall in the birth rate. According to Theory of Demographic Transition, every country passes through three stages of demographic transition. In the First stage, both birth and death rates are high and hence population remains more or less stable.
The main features of this stage are backward economy where agriculture is the main occupation, low per capita income, low standard of living, inadequate and unbalanced diet, absence of educational opportunities and presence of social evils like polygamy, early marriages etc.
In the second stage, there is rapid growth of population. With the beginning of process of development, the living standards of people improve, education expands/ medical and health facilities increase as a result of which death rate comes down.
But as long as society remains primarily agrarian and education remains confined to a narrow section of the society, attitude of the people towards the size of the family not change radically and the birth rate remains high. In this situation, population increases at an alarming rate. If in a country the process of industrialization accompanied by urbanization is not fast and education is not widespread, then this is really a grave situation. This is called Population Explosion.
The effects of population explosion are numerous with far reaching consequences. Some of them are unemployment, low living standard of people, hindrance in the process of development of economy, pressure on agriculture land, low per capita income, lack of basic amenities like water supply and sanitation, education, health, etc., high crime rate, environmental damage, migration to urban area in search of job, energy crisis, Overcrowding of cities leads to development of slums.
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Population growth has lead to the rise of many industries, which causes harmful impacts like unemployment, deforestation, increased water and air pollution, ecological imbalance, global warming, and climate change. People must control population growth, and this is possible only through education and awareness.
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