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Biology, 21.06.2019 18:00
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
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Biology, 21.06.2019 22:10
What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?
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Which process of living things produces water that enters the water cycle
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If animal agriculture was eliminated, how much grain would become available for human consumption?
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