Do review whether activities and costs contribute to your business objectives.

Human activity has contributed to the extinction of numerous species.

Human activities have contributed to a number of the observed changes in climate.

These activities also, however, contributed to a 27 percent increase in operating expenses, to $745 million.

If so, are human activities contributing to the change?

The industrial and fishing activities have contributed much to environmental pollution in the area.

Our educational activities have contributed to the passage of some legislation by Congress, but it is minimal.

It is even clearer that human activity contributes to this phenomenon.

This means that their activities are not contributing substantially to the budget of any state.

Nevertheless, such activities can contribute significantly to an organization's public image.