Answer:
But just because brain cells may be able to live indefinitely doesn't mean humans could live forever. Aging is dependent on more than the life span of all the individual parts in the body, and scientists still don't understand exactly what causes people to age.
 
        
             
        
        
        
<span>The correct answer is A.
Gregorian chant is monophonic which means that it has a basic texture. It
consists only of melody and is not accompanied by a harmony. The same note is
produced from men and women and all notes are sung together. The Gregorian
chant is commonly used in churches and other religious congregations and was
first developed in 9th and 10th century in western and
central Europe. Pope St. Gregory the Great is credited for the chant.</span>
        
                    
             
        
        
        
Answer:
sunken relief
Explanation:
The ancient Egyptians sometimes carved figures into a flat surface. This type of carving is known as sunken relief
 
        
                    
             
        
        
        
I believe that the answer is negative space.