What does the principle of conservation of matter say? How is this related to Earth's plates?

The principle of conservation of matter states that any object can modify its physical and chemical state but during these changes, the mass of the substance remains the same.

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1. Matter can change form through physical and chemical changes, but through any of these changes, matter is conserved. The same amount of matter exists before and after the change—none is created or destroyed. This concept is called the Law of Conservation of Mass. 2. The movement of Earth's plates is driven by plate tectonics, illustrating how the flow of energy drives the cycling of matter—the flow of heat from radioactivity within the Earth drives plate tectonics. The rock cycle, plate tectonics, and the water cycle are all convection-driven.

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the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.