Populations Study Stack
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What are the 3 characteristics used to describe a population | geographic distribution
population density
growth rate
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| What is an example of population density? | 500 deer in cass county (number, population, location)
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| When the birthrate in a population is HIGHER than the death rate, the population __________________. | Increases
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| When the death rate in a population is HIGHER than the birthrate, the population ____________________. | Decreases
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| When the birthrate and the death rate in a population are the same, the population will ___________. | Level off. (remain the same)
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| What are 3 factors that affect population growth? | Birth Rate
Death Rate
Immigration/Emigration
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| What is a limiting factor? | A factor that causes the growth of a population to decrease
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| What is carrying capacity? | The largest number of individuals of a population that a given environment can support.
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| What are two ways a population can decrease in size? | Emigration
birthrates are lower than death rates
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| What are the density-dependent limiting factors? | Competition
Parasitism/Disease
Predation
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| What are the density-Independent limiting factors? | Human Disturbances
Extreme Climates
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| Example of competition: | A pack of wolves fighting over food
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| Example of Extreme Climates: | Hurricanes destroying most of Puerto Rico
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| Example of Predation: | Bears killing fish
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| Example of Parasitism/Disease: | Ticks on a dog
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| Describe how human population has changed over time: | The population growth in humans was slow for thousands of years, 500 years ago there was rapid growth in the population.
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| Name the two historical revolutions that contributed to the change in human population: | Industrial and Agricultural
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| What happens first in demographic transition? | advances in nutrition, sanitation, and medicine mean more children survive to adulthood and more adults live to be older than before; death rate LOWERS.
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| What happens second in demographic transition? | Death rates fall, birthrates remain high- the population increases rapidly.
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| What happens third in demographic transistion? | Populations modernize and raise their standard of living. Birthrates are low and death rates are low. Population growth STOPS.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
mrs.carlock
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