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What factors might cause a population’s characteristics to change over time? Explain how these factors create change.
Ashlee_D
2/15/2011 12:26:46 am
I think that the change in resources such as food and shelter may cause the change in the population over time. For instance if you changed the way you eat; as in go on a diet. Then there would be no need for you to eat as much. Therefore, your diet would change and you would not need as mucha sa you could spend money on something else.
Krystal_S
2/15/2011 12:28:05 am
the demand for resources might cause a population to change over time. competion for food and also reproduction. A lack of resources might also result in this aswell to cause people to move where nothing is scarce.
Silvia E
2/15/2011 12:29:24 am
I think that a change in death rate could cause a Change in population over time because if the death rate increased over time more and people dying
Nicole J
2/15/2011 12:30:57 am
I think the factor sources they need is food, water, and shelter.
Brenda_S
2/15/2011 12:31:59 am
Famine,War,and Pestilence are a few. All in which can cause an drop in a population but can also cause those to reproduce more frequnently and have more children.
De'ja_P
2/15/2011 12:42:53 am
Populations charactersitics may change over time due to famine, natural selection, and enviornment. Famine causes massive die offs. Natural Selection, over long periods of time, may cause a particular species to go exinct. As the enviornment changes so do the way animals have to live. Some wont adjust and will die.
Mercedes
2/17/2011 12:26:32 am
I think epidemics or floods
Amanda_I
2/17/2011 12:27:57 am
A populations charcteristics could change over time due to new diseases alterations in gene structure or a change in environment. New diseases would cause population to decline but some people will be reluctant enough to be immune to it causing a change in genes. Changing the environment would also cause a change in genes because people would have to adapt causing there genetic structuring to be altered.
Lee S
2/17/2011 12:30:12 am
Some factors that can cause the population to change are the resources available to the population, natural selection, the carrying capacity of their habitat, and how their environment changes.
Jordan M
2/17/2011 12:30:51 am
I think things like resources, food, and climate will change a populations characteristics because people do certain things based on those 3 factors and if they change you will also have to change.
Nee`ma W
2/17/2011 12:31:16 am
Birth rates, death rates, the enviornment, weather, climate, food, and water causes the population characteristics to change over time. They create change becuause humans react to them.
Mya W
2/17/2011 12:33:08 am
populations change because People die, then other people are born. If the birth rate is higher than the death rate then population will rise.
Tekisha_C
2/17/2011 12:34:09 am
natural selction probably will cause the population to change Comments are closed.
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