Our Earth has many resources,but they are not unlimited.In the case of abundant metals,supply will most often meet demand.However,problems can occur when
A)there is a shortage of ores that can be mined at a reasonable cost.
B)high grade ores are depleted and low-grade ores need to be mined.
C)transport and processing costs override economic feasibility.
D)all of the above.

Question

Quizplus · Accepted Answer

All of the above scenarios can lead to problems with the supply of metals. A shortage of easily mineable ores, depletion of high-grade ores, and high costs for transport and processing can all impact the economic feasibility of extracting and using these resources. It is important to manage and conserve these resources to ensure their availability in the future.

Our Earth Has Many Resources,but They Are Not Unlimited