| react with carbon monox… | 0.44 |
| contain by weight of pr… | 0.35 |
| react with methanol | 0.31 |
| maintain the reactor pr… | 0.25 |
| stimulate the formation… | 0.25 |
| signal the production o… | 0.25 |
| accumulate in the bag | 0.25 |
| opposite effect | 0.25 |
| flammable | 0.33 |
| uncommon | 0.25 |
| an asphyxiant | 0.16 |
| explosive | 0.16 |
| toxic | 0.16 |
| gas | 0.79 |
| a plant hormone | 0.68 |
| hormone | 0.44 |
| the most produced organ… | 0.33 |
| colorless gas | 0.33 |
| natural gas | 0.31 |
| produced | 0.68 |
| produced by fruit | 0.63 |
| recovered | 0.57 |
| produced by plant | 0.57 |
| used to force the ripen… | 0.55 |
| introduced | 0.54 |
| introduced into the rea… | 0.44 |
| introduced into the aut… | 0.42 |
| preferred | 0.39 |
| released | 0.35 |
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