There's a word that means a feature that has evolved for a particular purpose which is then used for another since it's there. Like: feathers originally evolving as a heat regulation device, then being used to glide too/instead. Those features are an example of a [what] feature? Do you know? Tell me.
There's a word that means a feature that has evolved for a particular purpose which is then used for another since it's there. Like: feathers originally evolving as a heat regulation device, then being used to glide too/instead. Those features are an example of a [what] feature? Do you know? Tell me.