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HOW POPULATIONS GROW. CHAPTER5 SECTION 1 SC B-6: The student will demonstrate understanding of the interrelationships among different organisms & the biotic & abiotic components of their environment. 3 Important Populastion Characteristics . Geographic Distribution Density Growth Rate.
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HOW POPULATIONS GROW CHAPTER5 SECTION 1 SC B-6: The student will demonstrate understanding of the interrelationships among different organisms & the biotic & abiotic components of their environment
3 Important Populastion Characteristics Geographic Distribution Density Growth Rate
Population Density • # of individuals / unit area • varies depending on species and ecosystem
3 Factors Affect Population Size # of births # of deaths #s that immigrate & emigrate
Exponential Growth occurs when the individuals in a population reproduce at a constant rate *under ideal conditions with unlimited resources, a population will grow exponentially see J-shaped curve
LOGISTIC GROWTH • growth pattern in which a population’s growth rate slows or stops following a period of exponential growth • carrying capacity: largest # of individuals of a population that a given environment can support