The student's classification is correct since in the decay of a plant, in addition to a physical change, there is also a chemical change due to the transformation of the components and organic matter of the plant.
To identify the chemical changes that occur when a plant decomposes, it must first be remembered that the plant is composed of organic matter, which, when decomposed, begins to release elements in the form of gases such as methane and hydrogen sulfide.
Additionally, part of the organic matter is incorporated as elements, naturally or thanks to the bacteria that act in each of the processes.
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