A is a correct answer.
Dermis is does not had contain significant amounts of the protein collagen.
Hope it helped you.
-Charlie
        
             
        
        
        
The evolutionary effects of the genetic drift are the greatest when the population is small.
In small populations, genetic drift can significantly change the frequencies of the alleles and affect the genetic structure of the population. In big populations, the effects of the genetic drift are small and insignificant.
        
             
        
        
        
It entera from your body to the middle and then to the back and again.
        
                    
             
        
        
        
It absorbs oxygen while at the same time releases carbon dioxide across its surface  
        
             
        
        
        
There are four haploid cells after meiosis and cytokinesis. There are two diploid cells after mitosis and cytokinesis. It's easy to get confused. :D