Umm... If your talking about a bruise, then not usually, just be cautious of any radical changes in case of an infection, but a bruise is reasonable, seeing how it is trauma. If your talking about blood, then on occasion depending on your vantage point it may appear purple, don't worry it's just perspective. 
        
             
        
        
        
I think the above leg strength trait would increase in frequency because the rabbits with the stronger legs can escape predators.
The rabbits in the population that do not have the trait for above average leg strong will therefore start to decrease in number compared to those with stronger legs. 
        
             
        
        
        
Answer:
Explanation:
The ratio of the actual amount of water vapor present in a volume of air at a given temperature to the maximum amount that the air could hold at that temperature, expressed as a percentage.
 
        
             
        
        
        
Ethnicity reflects our cultural heritage
        
             
        
        
        
The answer is B. 
Genetic experiments showed that an amino acid is in fact encoded by a group of three bases, or codon.