J. Robert Oppenheimer created the bomb
There are lots of plains, and deserts in the west, and lots of the land in the west was inhabited by natives who lived their long ago.
Answer:
Human and animal muscle.
Explanation:
I don't mean this literally. If a farmer didn't own an ox to pull his plow, he would have to pull himself. Or with wheels, you would have animals walk in a circle, or crank the wheel yourself.
C. Elastic because a rubber band has elasticity
