What Are The Five Factors That Affect Population?

What are the factors that affect population?

Population growth is based on four fundamental factors: birth rate, death rate, immigration, and emigration..

What are the reasons for population growth?

These are the leading causes:Poverty. Poverty is believed to be the leading cause of overpopulation. … Poor Contraceptive Use. … Child Labor. … Reduced Mortality Rates. … Fertility Treatment. … Immigration. … Lack of Water. … Lower Life Expectancy.More items…•Dec 6, 2016

What causes population to decrease?

Causes. A reduction over time in a region’s population can be caused by sudden adverse events such as outbursts of infectious disease, famine, and war or by long-term trends, for example sub-replacement fertility, persistently low birth rates, high mortality rates, and continued emigration.

How does one determine population change?

The natural population change is calculated by births minus deaths and net migration is the number of immigrants (population moving into the country) minus the number of emigrants (population moving out of the country) – please see example below.

What are the four factors that affect population dynamics?

It may be that synthesis in population dynamics has been slow to emerge because population change is more complicated than it first appears. After all, population change is determined ultimately by only four factors: birth, death, immigration, and emigration.

How can we prevent population growth increase?

The recommendations are: 1) coordinate employment, food rationing, salaries, bonuses, health treatment, age and condition of retirement, preschool care and education with family planning programs, maintain the elderly’s living standard, and give preference to childless and single child families; 2) educate people about …

What are the dynamics of population change?

Population dynamics is the study of how and why populations change in size and structure over time. Important factors in population dynamics include rates of reproduction, death and migration.

How can predators affect the population growth?

They grow more slowly, reproduce less, and populations decline. … As predator populations increase, they put greater strain on the prey populations and act as a top-down control, pushing them toward a state of decline. Thus both availability of resources and predation pressure affect the size of prey populations.

What are the social factors affecting population growth?

Answer: actors that influence human population growth include: Healthcare/access to health care/medical technology/ability to fight or prevent disease. Availability of birth control/availability of family planning education/use of birth control.

What are the major factors responsible for population explosion?

A. 1 The major factors that are responsible for population explosion are illiteracy, reduced mortality, increased birth rate, and an increase in life expectancy.

What determines population size?

Two important measures of a population are population size, the number of individuals, and population density, the number of individuals per unit area or volume. … Uniform means that the population is evenly spaced, random indicates random spacing, and clumped means that the population is distributed in clusters.

What are consequences of population growth?

Rapid growth has led to uncontrolled urbanization, which has produced overcrowding, destitution, crime, pollution, and political turmoil. Rapid growth has outstripped increases in food production, and population pressure has led to the overuse of arable land and its destruction.

What are the 4 main challenges of population growth?

It identifies and ranks the 20 countries facing the greatest demographic challenges with respect to hunger, poverty, water scarcity, environmental degradation and political instability, taking into account various factors affecting their ability to meet the needs of a growing population, like corruption, climate change …

What are the 5 most densely populated countries?

Macao, Monaco, Singapore, Hong Kong and Gibraltar are the five most densely populated.

What are the three main factors that affect a population?

Three primary factors account for population change, or how much a population is increasing or decreasing. These factors are birth rate, death rate, and migration.

Which Two factors determine the size of population?

Population Growth Rate The two main factors affecting population growth are the birth rate (b) and death rate (d).

How can we prevent population growth?

Reducing population growthAbstinence. … Reducing infant mortality so that parents do not need to have many children to ensure at least some survive to adulthood.Abortion.Changing status of women causing departure from traditional sexual division of labour.Sterilization.More items…

What are factors affecting death?

The factors affecting death are age, sex, diseases, heredity, nutritional level, health facility and services and health education. Three of them are described below: Age: Mortality rates are different in different age group. Mortality is high among children and old people but it is low among youths.

What are the major components of population change?

The main components of population change are births, deaths, and migration. “Natural increase” is defined as the difference between live births and deaths.