Population Growth Limit Environmental Resistance 1.Food 2.Accumulation of waste 3.Increased competition 4.Predation Due to environmental resistance,exponential growth cannot be maintained indefinitely Logistic growth-S-shaped growth curve 20 20 Population Growth Limit Environmental Resistance 1. Food 2. Accumulation of waste 3. Increased competition 4. Predation Due to environmental resistance, exponential growth cannot be maintained indefinitely Logistic growth – S-shaped growth curve