| destroy ozone | 1.65 | CFCs produce chlorine, which react in polar clouds to destroy ozone. | ||
| produce ozone | 1.32 | In the presence of sunlight, the nitrogen compounds produce ozone. | ||
| reduce ozone | 0.53 | But tests found that MTBE did more to reduce ozone than an ethanol blend. | ||
| deplete ozone | 0.46 | Chemical emissions are depleting the ozone. | ||
| form ozone | 0.46 | Instead, they suggest, the ozone was formed by the light emitted by all the fireworks. | ||
| devour ozone | 0.26 | As the spring sun awakens, it frees chlorine to devour ozone. |