A low Birth Rate and environmental hazards are two things that can cause a population to decrease.
Migration can affect population distribution by causing the population of one area to increase while simultaneously decreasing the population of another. This can also cause one area to be more densely populated than another.
starting in world war two. Hitler's cause of the war was to wipe out the Jewish race. 88scott: Hitler offered an answer to the German people - to rid the country of immigrants. Most of the immigrants happened to be Jews - but the eradication of Jews was NOT the cause of the war. Most of the Jews were relocated (not exterminated as the Jew propaganda teaches). World Almanac, 1936, pg. 748 -- world Jewish population = 15,753,633 World Almanac, 1941, pg. 510: World Jewish Population -- 15,748,091 World Almanac, 1949, pg. 289: World Jewish Population -- 15,713,638 This shows a decrease of 40,005 NOT 6,000,000 ! (Many died from sickness spread by lice, so the Germans used Zyklon B to kill the lice)
You got food and water, you could sell your things, or trade
It reduced the Jewish population by about two thirds.
If you have a lot of people die, like with the plague, at one time that means that jobs and services are not being met. One of two things will happen. The job will be taken over by a living person or it will disappear. Many people were able to improve their standard of living because it meant they could take over for the person who died. By doing so the social structure changes and a shift in the economic structure takes place.
A low Birth Rate and environmental hazards are two things that can cause a population to decrease.
Death - especially war & disease.
Increase: Survival and Immigration Decrease: Death and Emigration
Friction is the force that can cause things to slow down. When two surfaces are in contact, friction creates resistance that opposes the motion of the object, leading to a decrease in speed.
Migration can affect population distribution by causing the population of one area to increase while simultaneously decreasing the population of another. This can also cause one area to be more densely populated than another.
people die or leave to a different place
Two consequences of the Great Famine of Ukraine were a significant decrease in the health of the population due to malnutrition and starvation, and a decrease in industrial productivity as the workforce was severely impacted by the famine.
I think the two things for population of species if they do not adapt. The answer I think is sea turtles,and salmon.
Since the two are normally paired a decrease in the availability of peanut butter may also cause a decrease in the purchase of jelly
Two main factors that cause population growth are high birth rates and low death rates. When birth rates exceed death rates, the population increases over time. Additionally, immigration can also contribute to population growth by adding individuals to the existing population.
The question is too ambiguous to answer. You may as well ask "what two things can cause error in geography"?
The two main factors that affect density are the mass of an object and its volume. An increase in mass or a decrease in volume will lead to an increase in density, whereas a decrease in mass or an increase in volume will result in a decrease in density.