How do birth , death, fertility, and migration rates affect population size?

Question

What factors can affect these rates?

Answer 1

higher birth rates will make population go up.
lower birth rates will reduce it or reduce the growth.
increasing death rates will lower population size.
if there is a plague, famine or aids epidemic, the population may decrease.
fertility is basically the same as birth. if you are not fertile you cannot give birth.
migraion; coming in increases population
if there is migration out, it will decrease the population.

availabililty of food will be important.
if there is no food people will leave (migrate reducing population)
if there is lots of food, birth rates will go up and the population will increase. - and more of those born will survive.

Answer 2

there is truly in straight forward words 2 issues: births and deaths and migration in and migration out fertility prices is an element in the births-deaths cohort, look on the inhabitants of lady women individuals that are of kid bearing age (say 18-35) and the fashion of stay births in protecting with one thousand women individuals, death prices is also appeared at to get a concept of the fashion of human beings death in a given area over a given era of time...if there's a intense style of human beings death then there is both alot of previous human beings in the area or there is a few extenuating situation which include disease that is increasing death totals. A intense style of kid bearing women individuals and a low death price can boost the inhabitants....migration might want to also be appeared because human beings bypass in and individuals bypass out of a community regularly by way of jobs, if better human beings moved right into a community than moved out then the inhabitants might want to bypass up ..both elements, births-deaths and migration in-out will result inhabitants and likewise enable inhabitants to be anticipated for projections into the destiny...

Answer 3

Population size factors: 1. Having enough clean water, food. You need having a good environment for that. Hence, vote left wing. 2. Having no war (= respect all people = only possible if you vote left, not right winged (like the republican)). 3. Having no floodings. You need having a good environment for that. Hence, vote left wing. 4. Having no floodings because of wrongly placed populations. These wrongly placed populations (like New Orleans) are a result of only thinking of economics, in stead of thinking of people/health/safety/security. These wrongly placed populations are typically a result of right winged thougts.

Answer 4

complex stuff. query from search engines like google. just that could help!