The emission of greenhouse gases is a major concern for environmentalists.

The factory emits harmful gases into the atmosphere.

The government is increasing enforcement of traffic laws to improve road safety.

Essentially, he is a good person.

The estimation of the project cost was way off.

It is evident that he did it.

The theory of evolution explains the process of evolutionary change in living organisms.

He will execute the plan tomorrow.

The execution of the plan went smoothly.

He made his intentions explicit.