highest producer of crude oil in the world???

Answer: Russia

Question: where do you find neurons in the brain?

Answer: cerebral cortex

Answer this question: the spleen is part of what system in the human body??

immune system

Q: how many justices must vote to hear a case before the supreme court hears the case?A: four

Input: when did half dollars stop being all silver?

Output: 1965

Please answer this: when does the north american butterfly association count butterflies in the u. s. each year?
July 4