The term "________" refers to a group of elements called lanthanides and actinides that are not often found in large, commercially valuable quantities.
A) special earths
B) restricted minerals
C) rare earths
D) earth obscures
E) nonelastic minerals

Question

Quizplus · Accepted Answer

The term "rare earths" specifically refers to the group of elements that includes the lanthanides and actinides, which are not commonly found in large, economically important deposits.

The Term "________" Refers to a Group of Elements Called