Module 8 Lesson 5 - 5

Lesson Summary

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• Biotic factors that are affected by population density are called density dependent factors. Examples are food, water, oxygen, space, parasitism, and predator populations.
  
  
• Abiotic factors that affect population density are called density independent factors. Examples are climate, temperature, storms, drought, frost, wind, and precipitation.
  
  
• Given unlimited resources, the highest rate of reproduction is called biotic potential, symbolized by r.
  
  
• Populations growing at biotic potential form a J curve and have exponential growth rates.
  
  
• Populations growing in environments with limited resources will not exceed a population size known as the carrying capacity, symbolized by K.
  
  
• Populations growing in environments with limited resources display an S-shaped or logistic growth curve.

Complete the Lesson 4 set of questions in Assignment 8B and Assignment 8D