UNIT IV HOW A COMPLEX ANIMAL USES FOOD FOR 



ENERGY AND GROWTH 



Fig. 1 88 }'oiir body consists of billions of liviv^ cells, each of ivhich Diust have a con- 

 stant supply of food. There seevis little connection between the foods on these shelves, 

 all made by plants or by animals that ate plants, and the cells in your brain, your arm, 

 and your toe. Can you explain how your body cells are kept alive and active by food? 



(RALPH CRANE FROM BLACK STAr) 



