1.  And indeed, such mastery is a prime component of the American style among oboists.

2.  Plutonium is the prime fissionable component in most nuclear weapons.

3.  That title is anything but frivolous, since the sex drive is a prime component of artistic creativity.

4.  The secret is that most autos and light trucks on the road contribute the least to vehicular pollution, the prime component of dirty air.

5.  Engineers say a byproduct of more efficient diesel engines is more nitrogen oxides in the exhaust -- a prime component of smog.