Answer:
Explanation:
Robert J. Oppenheimer was an American theoretical physicists. From 1939 - 1946 he was known for creating and doing research on an atomic bomb.
A liberty bond is a war bond that was sold in the United States to support the Allied cause in World War l.
In any energy pyramid, only 10% of the available energy is passed from one level to the next.
Hope this helps :D
17 billion - 9 billion = 8 billion so the surplus is 8 billion
