The second image went through permineralization
Answer: 50% of a mineral reserve.
Explanation:
I'm Smart
One US penny has a thickness of about 1.52 mm.
1.52 * 1000 = 1520 mm
1520 / 10 = 152 cm
1000 pennies is about 152 centimeters tall.<span />
<span>D. the crust
Thats the surface of the earth.</span>
