The physical description of sulfur is hydrogen
        
             
        
        
        
Answer:
In a more simpler term, the allele is just an variant form of a gene but in a more detailed explanation: each gene stays in a specific place on a chromosome in two copies. One copy inherited from each parent, but the copies or not really the same.
Explanation:
I majored in Biology
 
        
             
        
        
        
Answer: The answer is D. Unless light goes through a medium (like water or air) then light would be at its fastest speed going through a vacuum.
 
        
             
        
        
        
I think it is A the physical and chemical factors
        
             
        
        
        
Answer:
Label A. is probably Mitochondria, and Label B. is probably the nucleaus, but Im not sure about C. The ribisome or the endopplasmic reticulam, maybe??
Explanation: