A scientist sets up terrariums in a laboratory and observes the growth of lizards in each terrarium. Which of the following observations could be used as evidence that the amount of space in an environment can affect an animal's growth

A. Two different species of lizard grow to different sizes in the same terrarium.

B. Two lizards of the same species grow to different sizes in different-sized terrariums.

C. Two lizards of the same species grow to different sizes in the same terrarium.

D. Two lizards of the same species grow to different sizes in terrariums with different food supplies.

B. Two lizards of the same species grow to different sizes in different-sized terrariums.

The correct observation that could be used as evidence that the amount of space in an environment can affect an animal's growth is:

B. Two lizards of the same species grow to different sizes in different-sized terrariums.

This observation suggests that the size of the terrarium, or the amount of space available, can have an impact on the growth of the lizards.