This may sound terrible but less damage in a collision, and also view
CENTRAL NERVOUS SYSTEM INCLUDES THE BRAIN AND SPINAL CORD.
A renewable resource is a resource that can be renewed/or replinished meaning the Sustainably Harvested seafood must be your answer. Natural gas takes too long to replenish so it is considered non-renewable. You can bring back sand once it's gone nor Methane Hydrates.
Sustainably harvested seafood
hope this helped