Answer: a hydrosphere is a sphere of water in which the water cycle operates in a systemic matter so i guess you couold include the way it operates is in a systemic manner.
Answer: The Bureau of Labor and Statistics
Explanation:
Te Bureau of Labor and Statistics is the labor department of United States in which functions by collecting and researching about statistical figures and data.It also publishes the gathered information on prices,productivity wages, employment and market of labor. This department also updates about benefit and employment components .
According to the question, sister should research about the profession existence in upcoming years through The Bureau of Labor and Statistic to know about statistical fact about employment and professional field updates.