Question

Name the hardest naturally occurring substance

Diamond
Graphite
Copper​

Answer 1

Answer:

Diomond is the hardest natural substances

Answer 2

Answer:

While diamonds may be the hardest naturally occurring substance found on earth,

explanation , 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 lonsdaleit