Assertion: All minerals are inexhaustible over time.
Reasoning: The minerals have to be conserved and not misused as they do not have the second crop.

Assertion (A) is not true but Reasoning (R) is correct.

Minerals have certain characteristics. These are unevenly distributed over space. There is an inverse relationship in quality and quantity of minerals i.e. good quality minerals are less in quantity as compared to low-quality minerals. The third main characteristic is that all minerals are exhaustible over time. These take long to develop geologically and they cannot be replenished immediately at the time of need. Thus, they have to be conserved and not misused as they do not have the second crop.