Question

What is the hardest natural substance on Earth?​

Answer 1

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While diamonds may be the hardest naturally occurring substance found on earth, he explains, they are not the hardest available (there are two harder substances - a laboratory synthetic nanomaterial called wurtzite boron nitride and a substance found in meteorites called lonsdaleite).

Answer 2

Answer:

your answer

Explanation:

dimond is a hardest substance on earth