How Populations How Populations SurviveSurvive

pgs. B32-B41pgs. B32-B41

Chapter 5: Lesson 3Chapter 5: Lesson 3

1. limiting factor…1. limiting factor…

anything that controls the growth or anything that controls the growth or survival of a population. survival of a population.

2. carrying capacity…2. carrying capacity…

the maximum the maximum population size that population size that the resources in an the resources in an area can support.area can support.

3. endangered species…3. endangered species…

species that are in danger of becoming species that are in danger of becoming extinct.extinct.

4. extinct….4. extinct….

a species is extinct when it has died out a species is extinct when it has died out completely.completely.

5. threatened species…5. threatened species…

species may become endangered.species may become endangered.

How do people change the How do people change the environment?environment?

Urban GrowthUrban Growth Population has increased, land size remains Population has increased, land size remains

the same.the same. PollutionPollution

Air pollutionAir pollution Water pollutionWater pollution GarbageGarbage

Musical ChairsMusical Chairs

What were you competing for?What were you competing for? chairschairs

This is called the limiting factor.This is called the limiting factor.