Bases would CCAGAT. Hope this helps :)
        
             
        
        
        
Hi!
The answer is B) Atmosphere and Geosphere<span>
Hope this helps!
-Payshence xoxo</span>
        
                    
             
        
        
        
Answer:
jayfeather loved halfmoon but it was forbiden
Explanation:
 
        
             
        
        
        
The correct answer is: Layer 1, layer 2, and layer 4 in all three regions.
The index fossils are fossils that are commonly used for identifying a geological period of time, and these fossils are also very wide spread, as well as having a rapid evolutionary trends. 
By this picture, we can easily see that even though we have rock strata from different regions, the same layers contain the same fossil, and it is a fossil that also is rapidly evolving so has a minor change in each layer.