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. Questions: 1, 2, 4 and 5, 8, 15@ 2 pts = 12 ptsDue: Monday 1 November 2010. Homework Chapter 9. Plants need at least 17 essential elements: C, H and O from CO2 and H2O; six others are called macronutrients (3 primary, 3 secondary), 8 more are micronutrients. Several others are either necessa
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