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What country did a gold rush in 1851 cause the population to increase by 200 percent?
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∙ 12y ago
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What can cause a country's population to decline?
disease.
How does migration affect the country that migration is leaving?
That's a terrible answer and there is absolutely no logic backing it. First you need to understand the meaning of migration, which is the movement of people both ways - people leaving and coming into a country. Migration may cause a population increase, undoubtedly if there are more people coming into a country than going out, but this would also also increase a countries demand for services and facilities, opening up jobs in fields like construction, healthcare etc and reducing the unemployment rate which results in more tax revenue and national output which will increase the economy and leave the government with more money to spend as well as more personal income. An increase in population is not always a bad thing if it is done in a controlled way.
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.
What was the main cause of the great increase in the US population before 1830?
The main two causes of the great increase of the US population were a higher birth rate and a lower infant mortality rate. The increase is astounding, the population went from 2.7 million in 1780 to 12 million people in 1830! That's 8.3 billion more people, nearly a 400% increase in 50 years!
What two things can cause a population to decrease?
A low birth rate and environmental hazards are two things that can cause a population to decrease.
What is a cause of a country population increase?
a higher birthrate then Death Rate.
What is one cause of country's population increase?
a higher birthrate then Death Rate.
If natality equal to mortality what would cause the population to increase?
Immigration could cause the population to increase.
What is the minimum birth rate needed for a country to grow in population?
Any birth rate that is above the death rate will cause a population increase.
What is one cause of a country population increase?
a higher birthrate then Death Rate.
Why population increase and decrease?
Populations increase and decrease because people leave one country (emigration) and enter another (immigration). A rise or fall in either the birth rate or death rate in a country can also cause populations to increase or decrease.
What could cause a decrease in insect population?
an increase in the spider population
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 is the possible cause for the population to increase in a ecosystem?
yes
How will this effect the ecosystem as a whole?
The shrimp population will increase which will cause an increase in the squid population.
What is the cause of water resources increase?
World population and lifestyle.
Which is likely to cause a population a density to increase?
Plenty of food
