Answer:
a 
Explanation: because a prokaryote is a simple single-celled organism that lacks an organized nucleus or any other membrane-bound organelle 
 
        
                    
             
        
        
        
A)amino acid is the correct answer
        
             
        
        
        
D) Robert Hooke first discovered cells when observing cork under the microscope. 
 
        
             
        
        
        
When pieces of the granite get broken off and carried to a new place by weathering and erosion, the pieces can get deposited in the bottom of a lake or sea. Over time the sediments get compacted and cemented together to become sedimentary rock. Sandstone, limestone, and conglomerate can form this way.
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