Butyl rubber and EPDM (ethylene propylene diene monomer - a synthetic rubber) are the two best flexible liners for water garden construction. Each of these materials is UV stable and should last 20 years or more. EPDM and butyl rubber are generally available in 45 mil and 60- or 30-mil thicknesses, respectively.
human behavior. The capacity of mental, physical, emotional, and social activities experienced during the five stages of a human being's life-prenatal, infancy, childhood, adolescence, and adulthood.
By definition, human nature includes the core characteristics (feelings, psychology, behaviors) shared by all people. We all have different experiences of the humans in our life, and this is where the disputes begin. Some people will tell you humans are 'good' or 'bad', or 'predators' or 'capable of great kindness.' These views are colored by the influence of the people we know and what our culture and subcultures tell us.