A pond contains guppies, cichlids, and freshwater crabs. The collection of all of the guppies and no other species is considered a

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lasagna

lunch

math

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.