The Central Dogma states that genetic information flows in one direction. It is the process of copying a DNA sequence to make RNA which is being decoded to make the protein. Process of DNA to RNA to Protein
        
             
        
        
        
Answer:
C
Explanation:
It is believed that glycolysis – the first phase of cellular respiration in eukaryotic cells- is considered an ancient biochemical process that early organisms utilized to tap the energy required for cell functions. This is because the process does not require oxygen – because early conditions on earth were anoxic before the great oxygenation event.  It is after the great oxygenation event that the Krebs cycle evolved. 
 
        
             
        
        
        
In order for plants to assimilate nitrogen directly into their system, the nitrogen must be in the form of nitrates. Nitrogen in the air and ammonia from decayed matter in the soil is converted to ammonium by decomposers and nitrogen-fixing bacteria. The ammonium is further nitrified to nitrates by nitrifying bacteria. Finally, the nitrates can then absorbed by the plants.
        
             
        
        
        
C. light-years is the best to describe the distance