The answer would be the hippocampus it is responsible for the formation of the nerves to make long-term memories.  
        
             
        
        
        
I will go with A ....as radiation is out of question..... DNA sequence is same in all.......I don't think evolution is a mistake !
so A
        
                    
             
        
        
        
Answer:
I'm not sure how to help with this question because there was not enough information given.
 
        
             
        
        
        
The correct answer is:  [B]:  "False" .
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Topsoil is usually eroded first because it is made of small, lighter particles. Topsoil is a very useful layer of the soil that is filled with nutrients. This layer where plants grow. The best quality of soil allows for the smooth growth of plants and trees. Topsoil should be soft and made in small and light particles so that the roots can grow below it.
I hope that this helped!