greek word meaning between rivers the geography her. provided numerous benefits including warm climate water and fertile soil

if you listed your answers right then i believe your answer is b.

the cell is the smallest structural and functional unit of living organisms, which can exist on its own. therefore, it is sometimes called the building block of life. some organisms, such as bacteria or yeast, are unicellular—consisting only of a single cell—while others, for instance, mammalians, are multicellular.