The answer is skin cells. Other cells, like nerve and brain cells, divide much less often.
The answer to this question would be: rapid impulse transmission.
By having organ near the head, the brain can process the information faster because the length of the nerve that carries the impulse from organ would be much shorter. The nerve also at lower risk of damage since it was shorter.
But it makes the head very important and damage to the head can cause much more problem than any part of the body.
Answer:Enrico must multiply the distance of mars from sun (meters) with the 
to convert the distance in astronomical units.
Explanation:
1 astronomical unit = 
Let the distance between the sun and Mars be Y( meters)
Distance in AU= 
Enrico must multiply the distance of mars from sun (meters) with the to convert the distance in astronomical units.
A and C both seem like valid answers.
