How many atoms are represented in the reactants of this equation

All living organisms are composed of a. at least three cells. b. one or more cells. c. only one cell. d. at least 100 cells.

One significant difference between an ionic bond, where electrons are taken from one atom and added to another atom, and a covalent or metallic bond, where electrons are shared is

Why is the bottom layer of a trophic pyrimid the