Refer to the cladogram shown above. the numbers 1 through 5 represent species that exist today. what's the most recent common ancestor of species 1 and 4? a. c b. d c. b d. a

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miss jennifer is buying pencils in packs of 12, notebooks in packs of 16, and red pens in boxes of 20. she needs to have the same number of pencils, notebooks, and red pens. how many packs of each type should she buy?

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human impact on the environment can be seen in the deterioration of the !

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nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides