How does cerebrospinal fluid protect the Brain and spinal cord

It provides a fluid buffer which acts as a shock absorber that absorbs any kind of mechanical injury.

Explaination:

The cerebrospinal fluid is a clear watery protein- free substance that surrounds and protects the brain and spinal cord and also serves as nutrient delivery and waste removal system for the brain.

Protection:

It basically provides lubrication between bones and spinal cord & between the skull and brain. When the victim suffers from a head injury, the fluid acts as a buffer that absorbs or dulls the force.

cerebrospinal fluid acts as a shock absorber from some forms of mechanical injury.

Explanation:

CSF protects the brain which basically floats. It serves to minimize damage from blows to the head and neck. CSF surrounds or bathes the brain and the spinal cord. It's a clear, watery and almost protein-free liquid that acts as a fluid buffer for the protection of the nervous tissue.

when it is at an intermediate population density