Biotic would mean living so fish and sea plants
        
                    
             
        
        
        
Answer:
This specimen is also far too old for C-14 dating to be accurate, as well as for any other technique but palaeomagnetic dating.
Explanation:
The second part of the sentence is not accurate, since the remains were dated by uranium-lead dating. Carbon-14 dating measures ages in the tens of thousands of years, and uranium-lead dating measures in the millions to billions of years. 
 
        
             
        
        
        
The last option is corrrect because when one species move away from an environment or die it lead to decrease in biodiversity as well as the overall health of ecosystem also decreases.
        
             
        
        
        
Answer:
I can't see anything.
Explanation:
The image is there, but I can't zoom in. Tell me what it says and I'll help you from there! :)