Need some infos. that could help me answer this questions.
four factors that produce changes in population size.
What about famine, reproduction laws (as in the one child law in China), war, disease (as in the Plague), and medical breakthrus (polio, measle vaccines, and maybe someday HIV vaccine).
Migration (immigration and emigration) also affect the population size.
Ms. Sue can you please direct me to some readings on the web. thanks
Bobpursley and I have given you five answers to this question. What else do you want to know?
Rose, remember to use those terms that Ms. Sue and Bobpursley gave you as search terms -- http://www.google.com -- to find websites.
humidity and relative humidity.
To answer the question about the four factors that produce changes in population size, we need to understand the concept of population dynamics. Population dynamics refers to the study of how the size, structure, and distribution of populations change over time.
There are several factors that can influence changes in population size. These can be broadly categorized into four main factors:
1. Births: The number of births in a population contributes to its growth. Birth rate refers to the number of births per unit of time in a population. Factors that can influence birth rates include fertility rates (the average number of children born to a woman in her reproductive years), cultural and social practices, availability of healthcare and family planning services, and economic conditions.
2. Deaths: The number of deaths in a population contributes to its decline. Death rate refers to the number of deaths per unit of time in a population. Factors that can influence death rates include disease prevalence, access to healthcare, quality of healthcare, availability of clean water and sanitation facilities, overall nutritional status, and presence of natural disasters or conflicts.
3. Immigration: Immigration refers to individuals entering a population from another area (in-migration). When individuals immigrate into a population, it increases the population size. Factors that influence immigration rates include economic opportunities, political stability, social factors, and environmental conditions.
4. Emigration: Emigration refers to individuals leaving a population to move to another area (out-migration). When individuals emigrate out of a population, it decreases the population size. Factors that influence emigration rates include economic opportunities, political stability, social factors, environmental conditions, and conflicts.
To answer the question about the four factors that produce changes in population size, consider the impact of births, deaths, immigration, and emigration on population dynamics.