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Which macromolecules contain *only* carbon, hydrogen, and oxygen (CHO)?

Red flowered snapdragons are crossed with white flowered snapdragons, producing all pink snapdragons in the f1 generation. what would you expect if you crossed pink with pink? 3/4, 1/4, 1/2 red, 3/4,/1/2,/1/4 pink,1/2, 3/4, 1/4 white

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?

What are the subsystem of the earth