which material is hard in nature a.oxygen
b.sulpher
c.graphite
d.iron
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D part is the correct answer hope it helps pls mark as Brainliest bro
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Answer:
C.graphite is hard in nature.
Explanation:
Because we use the oxygen for breth.It is find everywhere in our nature. Iron is find in utensil.
Sulfer is find in natural gas and petruliam.
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