LessonElevenFourLawsofEcology(1)-BarryCommonerTeachingObjectives To enable students to understand Commoners concepts of four laws of ecology. To familiarize students with vocabulary concerning ecosystem, environmental crisis and biological terms. To appreciate the writing style. an American environmental scientist, also anauthorandastrongsocialactivist.Amemberofthe American Association for the Advancement ofScience. ReceivedhisbachelorsdegreeinzoologyfromColumbiaUniversity(1917)andhismastersandd