They can survive up to 185 days in artificial environments, or if their hosts are prevented from grooming. (fleascience.com)
Part of my reasoning has to do with pulling living organisms from nature and trying to force them into artificial environments with unnatural companions. (petbusiness.com)
The learner driver is shown a three - dimensional artificial environment by projection onto a wall in front of the vehicle and three monitors for the rear - view mirrors. (sciencedaily.com)