2 answers:
            
              
              
                
                
The remains of an animal or plant preserved within a layer of rock
                                
             
                    
              
              
                
                
The remains of an animal or plant preserved within a layer of rock.
                                
             
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Answer:
Depends on the environment, climate and etc
Explanation:
 
        
                    
             
        
        
        
Answer:
Produce antibodies
Explanation:
 
        
             
        
        
        
The work sheet is for you to answer so you get smarter 
        
             
        
        
        
Water was the only type of life on the planet for hundreds of million of years
        
                    
             
        
        
        
Hmmm I’m not quite sure about that