Final answer:
In geography, waduks are man-made features that are categorized as buatan within natural landscapes.
Explanation:
Waduk is a man-made reservoir, which falls under the category of a buatan or artificial feature of nature. The term 'ketampakan alam' refers to natural features, therefore dams or reservoirs like waduks are considered buatan in this context.
Learn more about Man-made reservoirs and natural landscapes here:
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