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Study this image of a geologic time scale. A 4 column table. Column 1, titled ERA, with entries: Caenozoic, Mesozoic, Paleazoic, Proterozoic, Archean, Hadean. Column 2, titled PERIOD, with entries: Quaternary, Tertiary, Cretaceous, Jurassic, Triassic, Permian, Carboniferous, Devonian, Silurian, Ordovician, Cambrian, Also known as Precambrian. Column 3, titled MILLIONS OF YEARS AGO, with entries: 1.6, 138, 240, 330, 410, 500, 3500. Column 4, titled KEY EVENTS, with entries: Humans evolve, Extinction of Dinosaurs with arrow pointing to approximately 68 M Y A; Permian mass extinction with arrow pointing just below 240 M Y A; Invertebrates become common with arrow pointing just below 500 M Y A; Earliest life with arrow pointing to 3500 M Y A. How long ago did invertebrates become common on Earth? 1.6 million years ago 132 million years ago 410 million years ago 520 million years ago
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Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above
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The allele for curly hair is incompletely dominant. if a mother is homozygous for curly hair and the father is homozygous for straight hair, what percentage of the offspring will exhibit characteristics of both parents? 25 percent 50 percent 75 percent 100 percent
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What substance acts to prevent sudden ph changes in bodily fluids?
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Study this image of a geologic time scale. A 4 column table. Column 1, titled ERA, with entries: Cae...
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