5. You bought an 18 karats ring which contains 18g of gold. What is the % by mass of gold in a ring? A. 65%
B. 75%
C. 85%
D. 95%

Amap's orientation is typically determined by an

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?

Aragonite shells of clams, snails, or scleractinian corals may be preserved unaltered in cenozoic deposits, but they are generally dissolved or recrystallized in older deposits. true or false