The term for the type of key that biologists used in separating<span> groups of organisms that are based on couplets is called taxonomic key. This key is very useful in the identification and classification of a </span>specific organism and it usually has an analytical characteristic.<span> </span>
CENTRAL NERVOUS SYSTEM INCLUDES THE BRAIN AND SPINAL CORD.
Well maybe that species evolved over time to get faster and be more durable because of the need to run away from lions and other prey.