Which factor is most important to keep the same when comparing the hardness of solids? A. The temperature of the hot plate
B. The amount of each substance
C. The intensity of the light
D. The method of making a scratch on the material​

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be

i think tornado but not 100%