Question

a single unit of chemical substance is called as dash​

Answer 1

Answer:

please tell - I wonders about movements in plants . he knows they do not move from place to place, but , do they show any other kind of movement?

Answer 2

Answer:

chemistry. Molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.