Douglas Houghton Campbell

Elements of Structural and Systematic Botany / For High Schools and Elementary College Courses



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    Konstantin Zilberburghas quoted7 years ago
    All living bodies feed, grow, and reproduce, these acts being the result of the action of forces resident within the organism. Inorganic bodies, on the other hand, remain, as a rule, unchanged so long as they are not acted upon by external forces.
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