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The Tian2 Study Library AP Edition · Tian2 Editorial Bureau
Volume I · MMXXVI AP Environmental Science
Library AP Environmental Science Unit 3: Populations
⁂   AP Environmental Science · Unit 3

3. Populations

10–15% of the AP exam. Key topics: Generalist vs. specialist species, K-selected vs. r-selected species, Survivorship curves: Type I, Type II, and Type III, Carrying capacity (K) and limiting factors, Exponential population growth model, Logistic population growth model, Density-dependent and density-independent limiting factors, Age structure diagrams and their interpretation, Total fertility rate (TFR) and replacement fertility, Human population demographics, Demographic transition model (stages 1–4), Rule of 70 and doubling time calculations, Population growth rate calculations.

10–15% exam weight standard track

Unit 3: Populations

Study guide content for this unit is being prepared. Check back soon for complete lesson notes, formula sheets, and worked examples.

Topics in this unit

  • Generalist vs. specialist species
  • K-selected vs. r-selected species
  • Survivorship curves: Type I, Type II, and Type III
  • Carrying capacity (K) and limiting factors
  • Exponential population growth model
  • Logistic population growth model
  • Density-dependent and density-independent limiting factors
  • Age structure diagrams and their interpretation
  • Total fertility rate (TFR) and replacement fertility
  • Human population demographics
  • Demographic transition model (stages 1–4)
  • Rule of 70 and doubling time calculations
  • Population growth rate calculations