Answer: B: the variety of living things on Earth.
(Biodiversity refers to every living thing, including plants, bacteria, animals, and humans.)
        
             
        
        
        
Answer:
A. Valine has replaced glutamic acid 
Explanation: 
hope this helps:)
 
        
             
        
        
        
Minerals are naturally-formed substances that have a specific chemical properties: abiogenic (minerals are not produced by or derived from living organisms,  non-organic in origin), stable at room temperature (i.e. at 25 degrees C)
, are represented by a known chemical formula
, have an ordered atomic arrangement/structure. Coal is not classified as a mineral because it is an organic substance. Correct answer: D (coal is formed from the remains of dead plants and animals).
 
        
                    
             
        
        
        
The cell would be destroyed since the nucleus contains the chromosones and R.N.A.