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This is an open source, free online high school biology textbook that includes text, visual media, videos and quizzes. You may access the latest edition of the textbook at flexbooks.ck12.org/cbook/ck-12-biology-flexbook-2.0.
This is an open source, free online high school biology textbook that includes text, visual media, videos and quizzes. You may access the latest edition of the textbook at flexbooks.ck12.org/cbook/ck-12-biology-flexbook-2.0.