| Answer | Crossword Clue |
|---|---|
| NUCLEARFUSION | It causes quite a reaction |
| STIMULUS | It causes a reaction |
| SPOON | This causes quite a stir |
| allergens | A substance that causes an allergic reaction |
| thresholds | A limit below which a stimulus causes no reaction |
| jumping | (of a person) Make a sudden involuntary movement in reaction to something that causes surprise or shock |
