How Populations Grow 1. What are 3 important characteristics of a population? 2. What is population density? 3. What 3 factors affect population size? 4. What is immigration? 5. What is emigration?

7. When could a population grow exponentially? 6. What is exponential growth? 7. When could a population grow exponentially? 8.What happens to a population as resources become less available? 9. What is logistic growth? 10. What is carrying capacity?

1. What are 3 important characteristics of a population? 2. What is population density? -the population’s geographic distribution, population density, & growth rate -the number of individuals in a certain unit of area Example: cacti usually have a low density, whereas wildflowers often have a high density

3. What 3 factors affect population size? 4. What is immigration? 5. What is emigration? -death rate (number of deaths), birth rate (number of births), & number of individuals that enter or leave population -movement of individuals into a population, increasing population -movement of individuals out of a population, decreasing a population

-when resources are not limited, under ideal conditions 6. What is exponential growth? 7. When could a population grow exponentially? -the growth of a population that is unlimited, so population produces at a constant rate, causes a J shaped curve: -when resources are not limited, under ideal conditions

-when a population’s growth stops or slows after growing exponentially 8.What happens to a population as resources become less available? 9. What is logistic growth? 10. What is carrying capacity? -population growth slows or stops -when a population’s growth stops or slows after growing exponentially -the max number of individuals that an ecosystem can support

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