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OpenStudy (anonymous):
I need help i cant find these answers 14. Some continents contain large core areas of Precambrian rocks called ____. (1 point) rifts plateaus shields 15. What is the major source of free oxygen in the atmosphere? (1 point) water green plants silicate minerals
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OpenStudy (here_to_help15):
What unit and lesson is this?
OpenStudy (here_to_help15):
Heyo?
OpenStudy (anonymous):
unit 1 test
OpenStudy (here_to_help15):
http://www.maximumachievementprogram.org/Earth_Science_Chapter_13_Section_1_Review.pdf http://quizlet.com/45302539/chapter-13-flash-cards/
OpenStudy (anonymous):
thank you so much
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OpenStudy (anonymous):
yea
OpenStudy (inowalst):
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