| 31. | Its main constituent is nitrogen, as is Earth's.
|
| 32. | Much of its light nitrogen seems to have escaped over time.
|
| 33. | Fertilizer is unnecessary and can be detrimental if high in nitrogen.
|
| 34. | The forecasts will measure sulphur dioxide, particulate and nitrogen oxide.
|
| 35. | The toxic algae needs phosphorus and nitrogen as nutrition to grow.
|
| 36. | Most of what is discharged from a septic system is nitrogen.
|
| 37. | He said part of the word'nitrogen'was covered.
|
| 38. | Nitrogen has never been used here, " he said.
|
| 39. | Workers tried to keep it afloat with nitrogen and compressed air.
|
| 40. | They have already installed one nitrogen tank and two oxygen tanks.
|
