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n200080 [17]
3 years ago
8

For what purpose is the mineral corundum commonly used?

Biology
1 answer:
prohojiy [21]3 years ago
5 0

Answer:

D I guess because grinding optical glass and for polishing metals and has also been made into sandpapers and grinding wheels.

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Hope this helped you- have a good day bro cya)

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A scientific theory states that the universe is expanding. Which of these statements is correct about this theory?
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Hope this helps !

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