Science Final Ch. 5

What are the three important characteristics of a population?
- geopgraphic distribution
- density
- growth rate
What are the factors that affect population size?
- number of births
- number of deaths
- number of individuals that enter or leave the population
geographic distribution

describes the area inhabitated by a population
population desnity

the number of indiviuals per unit area
growht rate

increase or decrease of the number of individuals in a population over time
what is the difference of immigration and emmigration?

immigration is movement of idnividuals into an earaa and emigration is out of an area
what is the shape of a growing logistic curve?

s shape curve
carrying compacity

largest number of individuals of a population that a given environment can support
What resources may a population be in competition for?

food, water, space, sunight, and other essentials
What are examples of density-independent limiting factors?
- unusual wether
- nautral disasters
- seasonal cycles
- human activities

Author

KattthD

129446

Card Set

Science Final Ch. 5

Description

Population

Updated

2012-01-21T21:18:59Z

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