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Able to reproduce.
Respiration.
Chemical exchange.
Presence of one or more cells.
Response to environment.
Look at your cat or other pet for application of these principles. You can observe it breathing. You can scrape some skin off and look at it under a microscope to see cells. You can dangle some string to see its reponse to environment. You can feed it and empty its litter box later to see the exchange of chemicals, and you can observe a cat give birth or engage in mating behavior to know it reproduces.

2006-07-16 07:20:00 · answer #1 · answered by Redshift Agenda 3 · 0 0

Sorry? Please expound?

2006-07-16 15:16:49 · answer #2 · answered by justmecharles 1 · 0 0

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