If a particular ore has been used extensively and the remaining deposits are extremely difficult to extract, then the ore is considered _______.
A) renewable
B) economically depleted
C) sustainable
D) a rare earth metal
E) semi-precious

Question

Quizplus · Accepted Answer

The term "economically depleted" refers to when the remaining deposits of an ore are too difficult or costly to extract, making it no longer commercially viable to continue mining it. It does not indicate whether the ore is renewable, sustainable, rare, or semi-precious.

If a Particular Ore Has Been Used Extensively and the Remaining