In high schools in the United States, where all courses are usually the same number of hours, often meeting every day, students earn one credit for a course that lasts all year, or a half credit per course per semester. This credit is formally known as a Carnegie Unit.
<span>Fayalite has a hardness of 6.5-7 on the Mohs scale. Therefore it scratches orthoclase (hardness 6), but not topaz (hardness 8).HOPE THIS HELPS:]</span>
Answer:
A,B and C
Explanation:
All of them because chemical leaks and oil refineries can be caused by people.
If the question is asking for his BMI ,His BMI is 17.62 percent
