Yo wassup can y’all help me

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

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist