Answer:
The cells analyzed might be a mosaic of different genomes
Explanation:
The human genome in every cell might not be the same and could give us some misrepresentation of what really happens on our genome. Chromosomal abnormalities are also a very common phenomena to be observed in human cells. For those differences in the genome of the child the test might have identified some altered cells with a type of chromosomal abnormality which was not latter identified or the abnormal cell might be also eliminated by its abnormal nature.
 
        
             
        
        
        
Answer:
A
Explanation:
It is converted by fixing nitrogen in the root nodules of some plants species
 
        
             
        
        
        
Answer:
Lactic Acid
Explanation:
Lactic acid builds up during strenuous movement combined with lack of sufficient oxygen.