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Understanding Biotic Potential and Environmental Resistance

Learn the concepts of biotic potential and environmental resistance, crucial factors impacting population growth. Biotic potential refers to growth capacity, while environmental resistance limits population expansion. Explore the dynamics of these terms for a comprehensive understanding.

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Understanding Biotic Potential and Environmental Resistance

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  1. TAKE NOTES ON THESE TWO TERMS! They appear on the AP exam but are NOT in our textbook! • Biotic Potential: capacity for growth • factors allow a population to increase under ideal conditions, potentially leading to exponential growth • Intrinsic rate of increase (r) = rate of population growth if resources were unlimited • Environmental Resistance: factors acting jointly to limit the growth of a population -- no population can grow indefinitely • affect the young more than the elderly in a population, thereby affecting recruitment (survival to reproductive age) • Allows for die-offs after overshoots

  2. Red curve = biotic potential Overshoots and die-offs due to environmental resistance

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