If all minerals are expressed by a specific chemical formula they have

answer; i believe the correct answer is (c) /// is a homogeneous mixture of gaseous substance nitrogen,oxygen and smaller amounts of other substancesmixtures can be either ( homogeneous or heterogeneous)plz check first good luck

can you attach a picture of the lettuce? : )

gasoline is a mixture. it contains several different kinds of compounds that can be present in a variety of ratios.

i think tornado but not 100%