usefulness

One student used the opportunity to describe the history and usefulness of clothing swaps, which she first learned about in the class.

The trouble is, when they outlive their usefulness, they become waste and end up polluting our oceans, rivers, soils and bodies.

But a number of statisticians have publicly questioned its usefulness.

Together, they stress important things to keep in mind when creating protected areas and when assessing their usefulness.

With that selflessness at the core of public service, he wrote: “I have thence enjoyed of manifesting my inviolable attachment by services faithful and persevering, though in usefulness unequal to my zeal.”