Regency is used to refer to the period in Britain at the beginning of the nineteenth century, and to the style of architecture, literature, and furniture that was popular at the time. ...a huge, six-bedroomed Regency house. ...the Regency period.
I've heard an average of about 12 years. Heredity and diet can make a big difference. I had a yellow lab who died pretty suddenly at 10, but I know someone with a lab that is 18 years old. My current black lab is a rescue, so I don't know his age.
Average lifespan is 700 hours. Fluorescent grow lights have a low heat signature and produce a decent spectrum of light for growing. Tube lights or compact fluorescents in a reflector are both available. Lifespan averages 10,000 hours. LED grow lights offer the latest technology on the market today.