This may be because the skills, time and materials required for each job vary depending on different customers' needs.

The skills needed vary considerably dependent upon the sport and whether or not artificial surfaces are used.

The skills varies depending on the character chosen to play.

Moreover, knowledge, skills and interests vary from human to human.

The education and skills required of paramedics vary by state.

It is obvious that the qualifications and skills required to be a police chief vary widely.

As with any other art form, the talent and skills of artists in this field vary widely.

I have often noticed that geographical skills vary greatly by age.

These officers were not professional soldiers; their experience and skill at warfare varied.

Your driving skills will vary depending on who you choose.