Your answer is A. <span>Some animals exhibit similar proteins.
(I deleted the other answers so future viewers won't get confused.)</span>
        
                    
             
        
        
        
Mutations and natural selection cause adaptations. Mutations can cause instant adaptations, while natural selection is the process by which adaptations occurs over a series of generations. 
Adaptations are changes or processes of changes by which an organism or species becomes better suited for its environment.
        
                    
             
        
        
        
Answer:
The meninges is a layered unit of membranous connective tissue that covers the brain and spinal cord. These coverings encase central nervous system structures so that they are not in direct contact with the bones of the spinal column or skull.
Explanation:
 
        
                    
             
        
        
        
There used to be solid land and then something happened and a lake or just a body of water formed over it or was made over it
        
                    
             
        
        
        
In order to turn percent to a fraction, first, we write it as 48/100. Then, from there we simplify it to the simplest form.
48/100 = (48/4) / (100/4) = 12/25
So, 48% <span>expressed as a fraction in simplest form is 12/25.</span>