Activity B: Get the Gizmo ready:

• Click Reset.

• On the SIMULATION pane, make sure Ample is

selected for the amount of LAND available.

Density-dependent

limiting factors

Introduction: Population density is the number of individuals in a population per unit of area. Some limiting

factors only affect a population when its density reaches a certain level. These limiting factors are known as

density-dependent limiting factors.

Question: How does a density-dependent limiting factor affect carrying capacity?

1. Think about it: What do you think some density-dependent limiting factors might be?

2. Predict: Suppose a shopping mall is built near a rabbit warren, leaving less land available for rabbits. How

will this affect the environment's carrying capacity?

3. Experiment: Use the Gizmo to find the carrying capacity with Am