The answer is hamstrings!! hope this helped. have a nice day:)
        
                    
             
        
        
        
Answer:
A
Explanation:
any form of asexual reproduction lowers rates of genetic diversity 
(not an expert but I think that's it, we are finishing up invertebrates in biology right now so it's fresh on my mind)
 
        
             
        
        
        
Option C  is the correct answer.
Epigenetic tags continue to accumulate in response to ongoing experience throughout the life span.
Epigenetic tags refers to the external modifications to DNA which can turn on and turn off the genes. Though these modifications do not change the DNA sequence but they affect how a cell reads the genes.
 
        
             
        
        
        
The two major contribution in forensic science made by Hans Gross are the following:
1. He is one of the founders of criminalistics for his research on the subject and the release of his book criminal investigation in 1891. The book was the first of its kind to be published which helps establish the science of forensics especially in terms of a cross transfer evidence from criminal to the victim. 
2. He detailed the assistance that investigators could expect from the fields of microscopy, chemistry, physics, mineralogy, zoology, botany, anthropometry and fingerprinting. He later introduces the forensic journal, which improves methods of scientific crime investigation.
        
                    
             
        
        
        
The rock layer on the bottom will decompose and either turn to sand, gravel, or blend in with the dirt (but most likely not the last one).