Chpt. 18 science test Crossword
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
 
 
Down: 1) contains several structures3) materials moved through the digestive system by wave-like contractions5) liquid waste Across: 2) functions to get oxygen from the enviorment and remove carbon dioxide and other waste4) uses oxygen to release energy6) moving and breaking down food7) important substances that enable the body to move, grow, and maintain homeostasis8) breaking down food into visable substances
 

 

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