Want this question answered?
The study of population change and distribution is demography.
what is the study of population change and distribution Dont repeat the question in the answer it is demography.
demography
Immigration: The movement of people into a country or region from another country can increase the population and change its distribution. Emigration: The movement of people out of a country or region to another location can decrease the population and alter its distribution. Rural to urban migration: The movement of people from rural areas to urban areas can shift the population concentration and density within a country or region.
The 1920 census marked the first time in American history that more people lived in urban areas than in rural areas. This shift from predominantly rural to urban living reflected the ongoing industrialization and urbanization of the country during that time.
Drought is not a change, is the result of a physical process.
The 1977 drought on Daphne Major resulted in a scarcity of small soft seeds, the primary food source for medium ground finches. This forced the finches to adapt by developing larger beaks to better crack open harder seeds, leading to evolutionary change in the population. Finches with larger beaks were more successful at obtaining food and had a higher chance of survival, passing on this trait to future generations.
The phenotype frequency does not change
Population growth in industrialized countries tends to reflect the economy, war and post war factors and immigration. In non-industrialized nations, the population is dependent on factors that are often out of the control of the country such as famine, natural disasters, tribal conflicts, drought and pandemic illnesses.
The most important change in population distribution in developing countries since 1900 has been rapid urbanization. This trend has seen a significant shift of people from rural to urban areas, creating challenges such as overcrowding, strain on resources, and unequal development between urban and rural areas. Urbanization has also led to the growth of informal settlements and slums in cities.
movement from rural areas to the cities
it can probably decrease the population of a country