Puzzle 1

__ Crab, marine creature with hard shell

Defibrillation for car battery

Someone who is outgoing and very expressive

Popular Nintendo driving game with steering wheel

Most forward position of an advancing army

The decade that followed the Nineties

Highest mountain in the Alps

Hometown for Harvard and the MIT

A hit by The Beatles

Everlasting condition, without change

A region in space with a strong gravity force