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.
Answer:
A
Explanation:
A. Tesla Motors, because he literally is the owner of Tesla
Answer: D
Explanation: Quick Explanation since you're in a hurry but I found that demographic transition makes the birth rate higher. D should be your best choice
Answer:
I'm pretty sure the answer is natural selection.
Explanation:
Natural selection acts on phenotypic variations in populations.
