http://www.sierraclub.org/john_muir_exhibit/john_muir_day_study_guide/ Land and People: Finding a Balance "An environmental study project that engages high school students in studying ecosystems resource issues.
(http://www.sierraclub.org/john_muir_exhibit/john_muir_day_study_guide/; Finding; a Balance) (An environmental study project; engages; high school students in studying ecosystems resource issues)
http://www.sierraclub.org/john_muir_exhibit/john_muir_day_study_guide/ An environmental study project
Finding engages
a Balance
high school students in studying ecosystems resource issues