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?

Question

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.

Answer 1

The 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 directly indicates that the size of the terrarium (the amount of space) is impacting the growth of lizards of the same species, allowing for a more specific conclusion about the effect of space on growth.