Each essential factor, once identified is able to be reviewed for potential points of control.

His stay at the club will be an essential factor for my future".

The essential factor in both cases is the idea of the public.

All kinds of resources and essential factors are accumulated further.

The engineering of this middle layer is an essential factor in price.

Mass appeal should be the most essential factor in this strategy.

Finally, tourism is an essential factor in public health and education.

As for how to prevent it, I think there are three essential factors.

Regular physical exercise is an essential factor in the maintenance of good health.

The soil type is one of the most essential factors during site planning.