Compose a time graph that contains your learning and insight about the contributions of social science disciplines that led to its emergence.

The authors use the word “backbone” in lines 3 and 39 to indicate that

Iqualified for the horatio alger scholarship. it is awarded based on financial need, but students must have a 2.0 gpa to apply. to qualify, students must pursue a degree at a four-year college.

Summarize the work of famous environmental scientists of the past.