I’m working on a social science discussion

I’m working on a social science discussion question and need an explanation and answer to help me learn. #1 Discuss two barriers or challenges to accessing data and provide an example of each based on data type. (CITE 2 SOURCES, REFERENCE MUST BE IN APA STYLE 7TH EDITION).#2 Define “credible data source.” Provide two characteristics of a credible data source. (CITE 1-2 SOURCES, REFERENCES MUST BE IN APA STYLE 7TH EDITION).#3 Other than Global Health NOW, select and describe one other global health resource (website, news outlet, journal, etc.) you plan to use throughout this course to help you understand global health and prepare for contributing to the course discussion forums. In replies to peers, review the resource that is discussed and identify a specific article or component of the resource that you found helpful. (CITE IN 1-2 SOURCES, REFERENCES MUST BE IN APA STYLE 7TH EDITION.)#4 Of the 10 public health services presented in the U.S. public health system, describe two of the services, the value they present, and an example of one at the federal, state, tribal, or local level. (CITE 1-2 SOURCES, REFERENCES MUST BE IN APA STYLE 7TH EDITION).