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How could the development of the transcontinental rail line increase migration?
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What are two reasons for the development of drug tolerance?
Repeated exposure to a stimulus could increase the development of drug tolerance.
How might migration affect population density?
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.
Where do hummingbirds start migration?
They could start migration just about anywhere where red flowers bloom
What could the transcontinental do that telegraph couldn't?
Carey people and goods across the country
What is to move from place to place?
migrate!
How were jobs different from before and after the gold rush?
After you got to work for the transcontinental railroad or you could farm.
What proved that the transcontinental railroad could reach the west coast during winter?
The Pony Express
How does migration affect the country the migrant is leaving?
Migration can lead to a loss of skilled workforce in the country the migrant is leaving, which could impact sectors such as healthcare and education. It may also decrease the working-age population and limit economic productivity. Additionally, if a large number of skilled individuals leave, it can hinder the country's development and growth.
what was an economic effect of the transcontinental railroad?
Goods produced in one region could be sent to another and sold.
Where could one find a migration expert?
A migration expert can be found by obtaining information from a website called Migration Expert. It will help people learn how to legally obtain things like a work Visa.
What are immigration and emigration and how do they affect population size?
Migration can increase population size by speading the animals (or people) over a wider area where there may be more resources. Migration (compression) into a single habitable area will increase the population density, but could cause either a numerical increase (more breeding) or a decrease (from limited resources).
What are scientists doing to increase the warning time for tornadoes?
Scientists are studying the storms that produce tornadoes, looking for indicators of tornado development that could give earlier warnings.
