Answer: nitrogen

AnswerCrossword Clue
NITROGENEssential for plant growth.
nitrogencolorless, odorless, tasteless gas
nitrogena gaseous element
NITROGENMost of the air
NITROGENPrimary constituent of air
NITROGENIt's in the air
NITROGENFour-fifths of the atmosphere
NITROGENIngredient of air
NITROGENExplosive element
NITROGENLarge part of the atmosphere.
NITROGENEssential of life.
NITROGENImportant element.
NITROGEN80% of Earth's atmosphere
NITROGENAtomic number 7.
NITROGENFour-fifths of the earth's atmosphere.
NITROGENDiscovery of Daniel Rutherford
NITROGENThe atmosphere, mostly
NITROGENMost of the atmosphere
NITROGENProduct of star fusion
NITROGENAmmonia component
NITROGENAlmost 80% of the Earth's atmosphere
NITROGENNearly 80% of the atmosphere
NITROGENMuch of the air
NITROGENAir, mostly