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THE INVISIBLE WORLD 



grasping food from the soil. This food enters the 

 digestive and circulatory systems of the plant, and 

 helps sustain its general growth. 

 Meanwhile, the upward sprout forms the stem, 



divides into, or produces, small branches and 

 branchlets, leaves, blossoms, pollen, and many other 

 organs, all of which act as so many mouths tak- 

 ing food from the atmosphere. 



