Birth rates are higher in LEDCs or LICs and the people becoming pregnant are at younger ages. A way to decrease birth rates is to teach people about contraceptive methods. This also means less disease is spread. 
Hope this helps
        
             
        
        
        
I guess evergreen.......C
        
             
        
        
        
<span>Sterols are four carbon chains linked like rings that are generally shorter than triglycerides, whereas tryglycerides are long fatty acids attached to a glycerol. Sterols are also more polar than triglycerides.</span>