They both attach their respective limbs to the axial skeleton. Good luck!
 
        
                    
             
        
        
        
Answer:
I believe a layer deep underground would have older things, because the ground could erode over time causing the fossil to sink into the ground.
 
        
             
        
        
        
Answer:
0.09641
Explanation:
not sure how to explain if its milligrams and kilograms
 
        
             
        
        
        
The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
 
        
             
        
        
        
Answer is in the file below
tinyurl.com/wpazsebu