| Answer | Crossword Clue |
|---|---|
| LIFE | Period of effectiveness |
| TRIALRUN | Test of effectiveness |
| SCOPES | Ranges of effectiveness |
| ERA | Sports meas. of effectiveness |
| FIREPOWER | Effectiveness of a weapon. |
| HONES | Maximizes effectiveness, as of skills |
| MORALE | Important aspect of military effectiveness. |
| SPF | Meas. of effectiveness against UV rays |
| SPF | Effectiveness of a coat at the beach?: Abbr. |
