Petra H

Petra H joined Socratic 7.879452054794521 years ago. Petra H hasn't written a biography yet.

414,910 students helped

Level 11 in Chemistry

Level 8 in Algebra

Level 5 in Prealgebra

Level 2 in Anatomy & Physiology

Level 1 in Geometry

38 Answers 4 Edits

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