Watermelon is classified as a heterogeneous mixture because it contains visible components like fruit flesh, seeds, and rind. It does not fit the definitions of an element, homogeneous mixture, or compound. The distinction lies in the visibility and individual properties of its parts. ;
Watermelon is classified as a heterogeneous mixture because it has distinct visible components such as fruit flesh, seeds, and rind. It does not fit the characteristics of an element, homogeneous mixture, or compound. Therefore, the correct answer is A. a heterogeneous mixture.
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