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Unformatted text preview: 5) Population Size: number of individuals in the total population a) Growth Rate= Birth Rate – Death Rte i) Death Rate Factors (1) Disease (2) Famine (limited resources) ii) Birth Rate Factors (1) Number of offspring/ litter (births) (2) Length of gestation (3) Life expectancy b) Exponential Growth: birth rate higher than death rate (J-Curve) i) Unlimited resources ii) No predation iii) No wastes/ pollutants c) Biotic Potential: maximum number of offspring VS. Environmental Resistance: limits the biotic offspring i) Carrying capacity: maximum number of organisms (one species) an area can support indefinitely (resources available) (S-Curve) ii) ER Factors (increases death rate) (1) Density-Dependent (Ex.: limited food): the higher the population, the higher the death rate (2) Density-Independent (Ex.: weather): the death rate does not increase with population size...
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