Answer:
The hardness rating is 4.
Explanation:
Calcite sits at a hardness rating of 3 and is very easily scratched with a knife and/copper coin. This is where most Marbles, limestones, travertines, rate.
Meanwhile, Fluorite sits at hardness 4 and can be scratched by a knife.
Answer:
a substance that can dissolve other substances
Explanation:
i just know this stuff. hope this helps and please mark as brainiest
Out of the three, only 1 is acidic because litmus paper turns red in acidic compounds and blue in basic compounds.
They are capable of dividing and renewing for Long periods of time They are unspecialized and they can give rise to speacialized cell types