Who is in charge of maintaining and modifying the rules of a state election

Which of the following is one of the innovations that neolithic farmers become more productive? a) plow b) windmill c) tractor d) reaper

Which term describes a possible explanation of, or answer to, a scientific question that is based on prior knowledge or research and that is testable?

He constitution dictates that the presiding officer of the senate is the a) majority whip. b) vice-president. c) majority leader. d) speaker of the house.