Whichthematicprogressionpatternhasbeenusedinthisparagraph? Hemp’senvironmentalcredentialsareindisputable.Itgrowsbetterinorganicsystemsthaninconventionalones.Itsmothersweedsandcontrolspests,clearingthelandforothercrops.Itimprovesthestructureofthesoil,withstrongrootstopreventerosion.Ifprocessedinthefield,itreturnsnutrientstothelandandpurportsto‘cleanup’soilcontaminatedwithheavymetals.Itisoneofaminorityoftextile-fibrecropsthatcanbegrownintemperateclimates.Sowhy,givenitspotential,issolittlehempusedtoday? (NewInternationalist,June1998,p.14)