Answer:
None of these are present
 
        
             
        
        
        
<span>(you already have the answer)
An elevated ridge of cerebral tissue inward folds of cerebral tissue is called a GYRUS.
Gyrus are usually surrounded by sulci( depressions).
</span>They exist because it allows the human, and other mammalian brains, to have <span>a larger surface area. Since the brain is confined to the skull and the that space is limited 
this will allow more cortical surface
area, and greater cognitive function to exist. </span>
        
             
        
        
        
 i believe in you you got this
 
        
             
        
        
        
Answer:
Seafloor spreading occurs along mid-ocean ridges—large mountain ranges rising from the ocean floor. The Mid-Atlantic Ridge, for instance, separates the North American plate from the Eurasian plate, and the South American plate from the African plate.
Explanation:
 
        
                    
             
        
        
        
True. 
Mostly false though.
If an animal wanted to eat a person that died from a mutation they could but I would say that would be a rare occurance.