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 animals growth?

Question

Two Lizards of the same species grow to different sizes in terrariums with different food supplies

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

Two lizards of the same species grow different sizes in the same terrarium

Two different species of Lizard grow to different sizes in the same terrarium

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:

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

This observation directly correlates the size of the terrarium (space available) with the growth of the lizards, which supports the idea that space may influence their growth. The other options either involve variables other than space (like food supply) or do not provide a direct comparison of space effects.