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Artificial fibers are man-made. Some examples are rayon, nylon, and kevlar.
An Artificial Island is an island built entirely by humans. There are many examples of artificial islands throughout history.
Uranium is not artificial radioactivity so it is not clear what the question is about.
Some examples of artificial boundaries are state borders that do not follow a river or other natural feature, such as the boundary between Oregon and California. Most city and county boundaries are also artificial.
A Mass & A Pendulum
For example natural and artificial radioactivity.
They are made of cells
natural selection occurs due to natural phenomena (e.g. changes in diet or predators).artificial selection occurs due to human generated phenomena (e.g. breeding or domestication).
a fence, wall, or trench.
Dolly the sheep fron new-york
iron,Aircon and Oven