; and (B) which may include the potential impacts on the disease from transmissions from Canada. (2) Requirements The arrangement under paragraph (1) shall provide that the actual expenses incurred by the Academy in conducting the study under paragraph (1) shall be paid by the Secretaries. (b) Contents of the study Within and between wild, captive, and farmed cervid populations, the study— (1) may include, to the extent the United States is affected on a continental scale, the potential impacts on the disease from transmissions from Canada; and (2) shall— (A) identify— (i) the pathways and mechanisms for the transmission of chronic wasting disease in cervids and cervid products; (ii) the dosage and infection rates for each such pathway and mechanism; and (iii) the relative frequency of each mode of such transmission; (B) identify anthropogenic and environmental factors contributing to new chronic wasting disease emergence events, the development of geographic areas with increased chronic wasting disease prevalence, and overall geographic patterns of chronic wasting disease distribution; (C) identify significant gaps in current scientific knowledge regarding the transmission pathways identified under subparagraph (A); (D) identify and prioritize scientific research projects that will address the knowledge gaps referred to in subparagraph (C); and (E) review science-based best practices, standards, and guidance regarding the management of chronic wasting disease in wild, captive, and farmed cervid populations in the United States which have been developed by— (i) the National Chronic Wasting Disease Herd Certification Program of the Animal and Plant Health Inspection Service; (ii) the United States Geological Survey