To perform this test to check if gold is real, make a light, tiny scratch on the item using a small nail file. Choose a spot that is not noticeable if possible. Use a dropper to apply a small drop of nitric acid to the scratch. If there is no reaction, then the piece is probably made from real gold.
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The Moon makes a full orbit around the Earth approximately once every 28 days. This means that the Moon orbits the Earth around 13 times in a year.
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Answer:
Protein modification and storage
Answer:
The answer is D
Explanation:
S-waves and P-waves are located in the mantle and when waves pass through the mantle the bend
<span> unicellular ciliates, </span>
