What should be changed to make the following sentence true? "States of consciousness do not vary over the course of the day."
A) The word "day" should be changed to the word "year."
B) The word "day" should be changed to the word "week."
c) Remove the phrase "do not."
D) The word "vary" should be changed to the word "differ."

The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community

Polar zones are cold and tend to be dry because of a pressure system of cold. low high

Part of the elbow is formed by the end of the humerus. what do you call this part?