Its main purpose is to restore partial flow of oxygenated blood to the brain and heart. ♥
 
        
                    
             
        
        
        
DNA<span> is a long polymer with deoxyribose and phosphate backbone. Having four different nitrogenous bases: adenine, guanine, cytosine and thymine. </span>RNA<span> is a polymer with a ribose and phosphate backbone. Four different nitrogenous bases: adenine, guanine, cytosine, and uracil.</span><span />
        
                    
             
        
        
        
Answer:
3x-2= 4x- 6 -x+7 =6x – 14 2x + 5 =45 3•(-3x – 5)=4•(10 – 5x) 6x = 4x + 8 x +5x - 9 =3(2x-3) -(x+1) + 8x = 5x – 9 x +5x - 9 =3(2x-3) 15-2x = 90 0,6(x+2) –(0,4x-0,6) = 0,2(1 - x) 4•(x – 1) + 1 =3•(2x +1) 3x –7=14 - 4x 3• (a+2)-1 =2•(a+3)+a 2 - (a - 3)=3•(a - 2)- 4a 2 - (a - 3)=3•(a - 2)- 4a I think
Explanation: