The correct answer is letter A: the circulatory system removes waste from the tissues by converting carbon dioxide-rich blood into oxygen-rich blood that can be circulated throughout the body to support its several functions. Without the lungs the human body will not be able to process converting blood cells into oxygen-rich cells in the body.
        
             
        
        
        
♥ They make use of a control group because its something that they can look into, something to compare to. <span />
        
             
        
        
        
Crowded between the collagen fibers are rows of fibroblasts, fiber-forming cells, that generate the fibers. Dense connective tissue<span> forms strong, rope-like structures such as tendons and ligaments.</span>
        
             
        
        
        
When we go to Hawaii, we know to dress light and bring an umbrella. This is because we know Hawaii's dry climate weather.