I would have to say formal, mainly because I looked it up on google.
Answer:
Gamora realized that the life-sized teddy bear was too heavy to carry, and couldn't fit into her car.
Explanation:
words like, And, but, nor, for, so. Need a comma before the word.
An online article about the evolution of bicycles.
I believe it means self government. If I remember right from that book, there was basically no government, so that means they had to take care of themselves because of no food, water, etc (until the end of course). I hope this helped. I wasn't too sure about this question, so hopefully its right!