but it's unclear that this definition really means anything, because you can say that humans lack the facilities to replicate itself, without access to food and water and air too!
We have the organs to reproduce provided that we, you know, exist... I'm not arguing how correct the definition is, more that it's what is 'textbook' from my understanding, and not really do do with the consume energy, produce waste comment or ability to react to an environment like some other posts suggested.