1. Chapter 5 Section 2: Limits to Population Growth
Identify factors that limit population growth.
Differentiate between density-dependent and density-independent limiting factors
Chapter 5 Section 2: Limits to Population Growth

2. Identify factors that limit population growth
Any factor that causes population growth to decrease is a limiting factor.
Examples:
Competition
Predation
Parasitism
Disease
Human disturbances
Drought or other extreme climate changes
Natural disasters

3. Differentiate between density-dependent and density-independent limiting factors
density-dependent limiting factors
A limiting factor (typically classified as biotic) that depends on population size
They only become limiting when the population density reaches a certain level (typically a very large, dense population size)
Examples include:
Competition
Predation
Parasitism
Disease
A limiting factor (typically classified as abiotic) that affect all populations in similar ways, regardless of the population size
Examples include:
Unusual weather (severe winter frost, etc.)
Natural disasters (droughts, floods, etc.)
Seasonal cycles
Human activities (clear-cutting forests, damming rivers, etc.)

4. Parasitism and disease
Copy this concept map and fill in the blanks. Can’t see this? Turn to page 134 Thinking Visually
Populations
Are limited by
1. __________
Which include
Predation
3. __________
Parasitism and disease
2.___________
Such as
4. __________
Natural disasters
Human activity

5. Post Notes Assignment
Write the questions numbered 1 – 3 on page 127 and answer them.
Then write the definitions for the vocabulary found only in section 2
Limiting factor
Density-dependent limiting factor
Density-independent limiting factor
Predator-prey relationship