PLANT BODY 



INCOttE 



OUTGO 



l ENERGY 



b Liquid 



c Solids in i 

 Solution} 



FIG. 4. Diagram illustrating the general nature of the income and outgo 

 of a green plant from the forces and materials of its environment 



The student is expected to fill in the details under the captions Energy, Gases 



Liquids, and Solids (consult Chapter I in the text). Do not fill in a detail unless 



it is correct to do so. The diagram is merely suggestive 



