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A Dam
The definitions is : Natural- A natural plant Artificial- An artificial one
artificial
Natural silk is a proteinic fiber (sericin and fibroin).
natural plasma- sunlight, artificial plasma- tube light
A wall or barrier that is natural is called a cliff or a rock formation, while an artificial wall or barrier is often referred to as a fence or an enclosure.
distacore
A Dam
A wall used to prevent flooding that is not a dam is a dike.
A Dam
A dike. Not a dam.
himilayan mountains
Lake Qinghai
Lake Qinghai
Natural is to nature as artificial is to artifice.
The definitions is : Natural- A natural plant Artificial- An artificial one
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