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Chapter 4 Bio

Chapter 4

WordDefinition
Population a group of organisms of the same species that live in a specific area
Exponential Growth means that as the population gets larger, it also grows at a faster rate (J-shaped growth curve)
Carrying Capacity the number of organisms of one species that an enviroment can support indefinitely
Life-History Pattern an organism's reproductive pattern
Density-Dependent Factors include disease, competition, predators, parasites, and food. (Have an increasing effect as the population increases)
Density-Depenent Factors include temperatures, storms, volcanos, drouhgt (affect populations no matter what density- usually abiotic factors)
Limiting Factor factors that affect an organism's ability to survive in its enviroment
Demography the study of a human population's size, density and distribution, movement bitrth and death rates
Birth Rate The number of live births per 1000 populationin a given year
Death Rate the number of deaths per 1000 population in a given year
Doubling Time the time needed for a population to double in size
Age Stucture refers to the proportions of the population that are different age levels
Created by: herbunny
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