When your cat stalks and pounces on a bird, the cat is quiet, seemingly a cold-blooded killer, indicative of ___ aggression, but a cat when confronted by a bear arches its back, bristles its fur, and hisses menacingly at the bear is indicative of ___ aggression.

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

b is the correct answer

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