- Food supply often limits predator population size in an ecosystem
- A bear is a kind of predator
- Therefore, food supply may limit the bear population in an ecosystem

- Food supply may limit the bear population in an ecosystem
- Population is a measure of the number of a species in an environment
- Hence, food supply may limit the number of bears in an ecosystem

- Food supply may limit the number of bears in an ecosystem
- A forest is a kind of ecosystem
- Therefore, food supply may limit the number of bears in an forest

Hence, food supply may limit the number of bears in an forest
In a large forest with many animals, there are only a small number of bears. Which of these most likely limits the population of bears in the forest?
- Food supply often limits predator population size in an ecosystem 
- A bear is a kind of predator 
- A forest is a kind of ecosystem 
- Population is a measure of the number of a species in an environment