Possible Clues:

• Go in car? That's bad, with carbon involved
• Maybe free-range, like men taken to state penitentiary, almost
• Non-chemical
• Fundamental shifting in cargo
• (Compound) containing carbon
• Killer whale gobbles one horse up, that's natural
• Free of pesticides
• Live pipes at play, I see
• A top-level Internet dom­ain, one I start to consider as a living thing
• Produced by natural means