I think maybe the nephrons ...but not sure...
The answer is A
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Carbohydrates, polymers, proteins, and nucleic acids.
These are, well, large organic molecules that are synthesized from multiple identical subunits, as questioned above.
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The best and most correct answer among the choices provided by the question is the fourth choice "cenozoic"
The other two are the Mesozoic and Paleozoic Eras. TheCenozoic<span> spans only about 65 million years, from the end of the Cretaceous </span>Period<span> and the extinction of non-avian dinosaurs to the present. The </span>Cenozoic<span> is sometimes called the Age of Mammals, because the largest land animals have been mammals during that time.</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
