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Vinod took a beaker of ice from a freeze...

Vinod took a beaker of ice from a freezer and measured its temperature immediately. Then he measured the temperature of the ice in the beaker every 2 minutes. His results are shown in the graph. Vinod noticed during his experiment that the temperature of the ice did not change for a period of time.

What change did the ice undergo during this period of time?

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It melted
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