13-5 How are populations limited?
Aim: How are populations limited?
OBJECTIVE: Explain factors that limit the size of a population.
Key Terms
limiting factor: condition in the environment that puts limits on the size of a population
carrying capacity: largest population size that can be supported by the available resources of an area
range: area where a type of animal or plant population is found
population density: number of members of a species that live in a certain area
Lesson Summary
• All organisms are limited by conditions in the environment called limiting factors.
• The largest size of a population that can be supported by an area is the area’s carrying capacity.
• The range, or living area, of a population is determined by its limiting factors.
• Some animals have a large range while others have a small range.
• The number of green plants in a community is a limiting factor of the animals in the community.
• Population density is the number of members of a species that live in a certain area. If the population
density is high, predators are more likely to catch prey.
OBJECTIVE: Explain factors that limit the size of a population.
Key Terms
limiting factor: condition in the environment that puts limits on the size of a population
carrying capacity: largest population size that can be supported by the available resources of an area
range: area where a type of animal or plant population is found
population density: number of members of a species that live in a certain area
Lesson Summary
• All organisms are limited by conditions in the environment called limiting factors.
• The largest size of a population that can be supported by an area is the area’s carrying capacity.
• The range, or living area, of a population is determined by its limiting factors.
• Some animals have a large range while others have a small range.
• The number of green plants in a community is a limiting factor of the animals in the community.
• Population density is the number of members of a species that live in a certain area. If the population
density is high, predators are more likely to catch prey.