What are the factors that determine the change in population size on a global scale?

On a global scale, the factor that determines changes in population size is the natural growth rate. The factors that affect the change in the population of an area are natural growth and mechanical growth. On a global scale, however, changes in population numbers depend only on natural population growth.

Population growth rate.

Including the natural population growth rate.

and the mechanical growth rate of the population, but it is not a simple addition of the two. The mechanical growth rate of population refers to the ratio of the absolute number of population increases and decreases in a year due to the increase and decrease of the population due to the factors of migration and emigration to the average total population of the same year.

The natural growth rate of the population is an important indicator that reflects the rate of population development and the formulation of population plans, and is also an important indicator in family planning statistics, which indicates the degree and trend of natural population growth.

On a global scale, the natural rate of population growth is determined by the change in population size.

The number of people who determine the population is determined primarily by the productivity and socio-economic level of the society!

In the past, the main reason why there were so many Chinese people was because China was an agricultural society, productivity was low, labor mainly depended on people, and farmers could only produce more people to work when they cultivated the land! With the improvement of productivity and the popularization of mechanization, farmers' fertility willingness will gradually decrease!

The second is the socio-economic level, the better the economy, the higher the quality of life of the people, the higher the cost of living, in fact, now in China's big cities have been reflected, high housing prices, high prices lead to many people can not afford to raise children, so the willingness to have children is getting lower and lower!

Q:From the perspective of global consumption, what are the factors that determine the change and deterioration of the number of hailstones in the wild?

A:Natural growth rate.

Imperial examination clicker.

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The distribution of the world's population is mainly affected by the natural environment and socio-economic conditions such as topography and climate

So the answer is: natural environment; Economic conditions

1. With the development of productive forces, the number of people available for support has greatly increased;

2. With the progress of information dissemination and the continuous increase of exchanges between regions of the world, it has led to the prosperity of the world, and globalization has been continuously promoted.

3. With the continuous progress of human civilization, the understanding of the harmfulness of war has been deepened and popularized, and the idea of peace has been deeply rooted in the hearts of the people.

4. Ancient society lacked large-scale lethality**, although wars were frequent, but the population was still increasing; In modern society, although there has been mass destruction such as nuclear bombs, the desire for peace of mankind has been deeply rooted in the hearts of the people after World War II, so it will not lead to the abuse of nuclear bombs, so the population is still growing;

5. Population is the most basic productive force, and the demand for population in ancient society led to the encouragement of fertility in ancient times, while the rapid growth of population in modern society under the condition of a huge population base has been irreversible;

Here are some of my observations, I hope it will be helpful to you;

There are many reasons, the development of science and technology, the death rate has been greatly reduced, and the average life expectancy of people has increased, and the number of contacts between countries has increased, so the "global village", all countries have united to fight against natural and man-made disasters, we are gradually moving towards civilization, and the reduction of wars, even if there is a significant shortening of the war time, and the danger of the environment has been greatly reduced, these are my feelings, and reading books and watching TV and surfing the Internet, there is no statistics and calculations to support ......I'm sorry.

Answer] :(1) The trend of world population growth.

Looking at the growth of the world's population, the following three trends can be summarized: the absolute growth of the world's population is increasing; The rate of growth has slowed, accelerated, and then slowed down. Population growth is uneven across countries and regions of the world.

and 2) population growth in developing countries and its impact.

Huge demographic pressures in developing countries.

Developing countries are under enormous demographic pressures due to the following reasons: a since the post-war period, the living standards of the population of developing countries have initially improved, and the mortality rate has dropped significantly; b Developing countries remain agrarian countries with low levels of productivity and an objective need for an ever-increasing labour force; c The influence of traditional attitudes in developing countries is deeply entrenched and the low status of women leads to high fertility rates.

The impact of excessive population growth on the economies of developing countries.

The negative impact of excessive population growth on developing countries is multifaceted, mainly manifested in: a heavy burden on economic development; bExacerbate poverty in developing countries; c Polarization is becoming more and more prominent.

The impact of excessive population growth on the development of the world economy.

The impact of excessive population growth on the development of the world economy is multifaceted, mainly manifested in: (a) the accelerated consumption of the earth's resources, resulting in ecological imbalance and environmental pollution; b The economic gap between the North and the South has widened; c Excessive population growth in developing countries not only affects the world's sluggish economic development, but is also detrimental to world peace and stability.

and 3) the continuous decline in the birth rate of the population in developed countries and its impact.

The birth rate in developed countries continues to decline.

The decline in the birth rate and mortality rate and the extension of life expectancy determine the worldwide trend of population aging, while the decline in birth rate and mortality rate and the extension of life expectancy are the inevitable results of economic and social development. Ageing in developed countries is much worse than in developing countries.

The impact of the continued decline in the birth rate of the population in developed countries.

The continuous decline in the birth rate of the population in developed countries has led to the phenomenon of population ageing in developed countries, and population ageing has brought a series of socio-economic problems to the countries concerned, mainly including the following aspects: a aging age structure of the labor force; b Labour shortage; c The burden of social security has increased.

Answer A This question examines changes in population size, the population of a region depends on the natural and mechanical growth of the population, but the mechanical growth of the population has no effect on the change in the global population.