| Gas |
| Common gas |
| Air, mostly |
| Common gas, N |
| Gaseous element |
| It's in the air |
| Much of the air |
| Explosive element |
| Ingredient of air |
| Ammonia component |
| Biggest part of air |
| Main element of air |
| Something in the air |
| Product of star fusion |
| The atmosphere, mostly |
| Most of the atmosphere |
| Element in laughing gas |
| Primary constituent of air |
| Main constituent of the air |
| Nearly 80% of the atmosphere |
| Four-fifths of the atmosphere |
| Discovery of Daniel Rutherford |
| About 78 percent of our atmosphere |
| Alkaloid constituent, by definition |
| Almost 80% of the Earth's atmosphere |
| Four-fifths of the earth's atmosphere. |