What is the difference between a homozypous dominant organism and a heterozypous organism

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures

Fecl3 + naoh → nacl + fe(oh)3 what are the coefficients that should be added to balance this equation? use complete sentences to explain your answer. explain how this chemical reaction demonstrates the conservation of mass.

Why must pencil be used to draw on paper in paper chromatography