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The melting of glaciers is what kind of change in the water cycle?

Answer and explanation

Correct answer: Physical state change

Melting is a physical change in the water cycle. In a glacier, water is present as solid ice. When temperature rises, the ice absorbs heat and changes into liquid water. The substance remains water throughout the process; only its physical state changes. The resulting meltwater can flow into streams, rivers, lakes, or oceans and can later take part in evaporation and other stages of the cycle.

This process does not create a new substance, so it is not a chemical change. It is also not a biological change, because no organism is required for ice to become liquid. The statement that glacier melting is outside the water cycle is incorrect, since glaciers are an important store of freshwater. Therefore, option B, physical state change, follows directly from the distinction between a change of state and a change in chemical composition. The supplied answer is accurate.

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