Nitrogen.
Hydrogen.
On the earth there is air. There is no air on the moonAir, liquid water (There actually is frozen water on the Moon), life, Almost everything.On Earth, you can find liquid water, a substantial atmosphere, and lifeforms.
Rising convectively, a cumulus cloud is the most common.
It could possibly be many types of gasses. The most common is helium(He)
-- Inflate the balloon with some substance that is less dense than air. OR -- Inflate the balloon with air, then heat it after it is sealed.
water is the and most found substance also earth and air
The most common substances are Water, Air and sand.
WATER
The most common indoor air pollutant is air freshener.
That's true of most substances around us, like air, iron, plastics, glass, and rocks.The most common is probably water .
Common Salt
Hydrogen.
ice
true for A+ :)
After water, SALT
true for A+ :)
Tobacco