They must become familiar with their surroundings.
Answer: Constituents and the Nation
Explanation: The House of Representatives is the lower house of Congress, made up of 435 representative members, each of whom elected by the majority system represents a congressional district. Members' term of office is two years.
The answer to what concerned epistemic communities more is environmental issues. Epistemic communities, their value, and effect on transboundary issues are highly prejudiced by the work of Peter M. Haas' Introduction: epistemic communities and international policy coordination. The occurrence of epistemic communities came to be by the demanding complex issues existing to decision makers.