Simplify the following text for a Grade 6 native English-speaking person.
Original: Argon constitutes 0.934 % by volume and 1.28 % by mass of the Earth 's atmosphere , and air is the primary raw material used by industry to produce purified argon products .
Simplified: Argon atoms are found in air . About 1 % of the Earth 's atmosphere ( the air around us ) is argon .