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Species distributions have ecological limits defined by an interaction between species ' niche requirements and the abiotic and biotic characteristics of the environment . The main outcome was the number of homeless nights ( not including nights when patients decided not to go home because they had other things to do ) . Patients undergoing cholecystectomy in a Pennsylvania hospital had postoperative care on one of two floors , with rooms which looked at either a brown brick wall , or a small stand of deciduous trees . Each of them has different agendas and priorities ; mediating among their often conflicting interests is essential for designing a successful DRM system . The City Court during his tenure and before the enactment of the Municipal Courts Act had unlimited jurisdiction of all actions in law and equity arising within the limits of the city of Hartford .