Oxygen and carbon dioxide are the gases transported by the red blood cells. Oxygen is collected from the air in the alveoli to the blood capillaries. It binds to the heme group in <span>the haemoglobin<span>, which confers the red colour to the red blood cells where it is contained. </span></span>Carbon dioxide moves the other way around, from capillaries to alveoli. They are transported by the red blood cells when oxygen is exchanged by carbon dioxide from the cells' metabolism. 
        
                    
             
        
        
        
Answer:
development 
Explanation:
im pretty sure that the answer is cognitive development motor skills and the ability to use language to communicate 
 
        
                    
             
        
        
        
Answer:
Static Stretching
Explanation:
This is a common stretching that is executed by extending the targeted muscle group to its maximal point and holding it for 30 seconds or more.