the answer is fossils I just took the test seismographs is incorrect 
 
        
             
        
        
        
when they hit it at too shallow of an angle it causes them to curve away 
 
        
             
        
        
        
From my speculation it is loss of habitat and global warming
        
                    
             
        
        
        
Answer:
           x         y
x8     x8x     x8y
x8      x8x     x8y
The results of the punnet square show that:
They will not have a son who will be colour blind.
They will not have a daughter who is colour blind.
All the daughters born will be carriers of red- green colour blindness.
The genotype of the two parents will be:
Genotype of mother: x8,x8
Genotype of father: x, Y