Misc: In 1907 Gene---------- , singer/actor/Calif Angels owner, born. ?

Questions

Portion of the central nervous system contained within the skull?

Process by what an organism becomes better adapted to exist in an environment different from the one to what it was indigenous?

Process of heat treatment by what glass & certain metals & alloys are rendered less brittle & more resistant to fracture?

Property of a fluid that tends to prevent it from flowing when subjected to an applied force?

the early bird __________?