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What do astronomers use to caculate the age of the universe? check all that apply?
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How does pregnancy begin? a) a placenta forms in the uterus b) a sperm reaches an egg in the fallopian tubec) the blastocyst differentiates into two cell types d) contractions begin in the uterine wallapex
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Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.
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Ineed with a hypothesis my question is can seeds sprout in different locations?
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Bio molecules are essential to all living things. which biomolecule is “d” from the table
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What do astronomers use to caculate the age of the universe? check all that apply?...
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