Warfare jet engine and space exploration 
        
             
        
        
        
What  would  happen  if  M RNA   were  radio actively  labeled  instead  of  polypeptides  is   that    instead  of  one  seeing  the  DNA  passing  through  all  the  molecular  factories  you  will  instead see  just  messenger  RNA   taking  code  and   delivering  it  to  Ribosome.  This  is  mainly  found   in   cytoplasm  and  Endoplasmic  recticulums.
        
             
        
        
        
According to scientists, many years ago their was a supercontinent called "Pangaea." As years went by, the continents slowly drifted apart which is what's today. However, from recent discovers, scientists predict that in about 250 millions years from now the continents will merge again, however this time, in a different order ("Pangaea Ultima"). So the answer to your question is D.
Hope this helps. :D
 
        
                    
             
        
        
        
Yes and it consists of abiotic factors, river, rocks, etc
        
             
        
        
        
Hello!
I believe the best answer to your question would be Option C) excess carbon dioxide.
Hope this helps, and have a lovely rest of your day :)