Question

the outer surface of cerebrum is folded with the ridges and grooves
give reason ​

Answer 1

Answer:

Explanation:

The human brain is relatively large and very wrinkled. Wrinkles increase the surface are for neurons. The reason our brains have that wrinkly, walnut shape may be that the rapid growth of the brain's outer brain.

Answer 2

Answer:

to protect from shock and any external shock .

like beatings , etc