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In an earthquake-prone area, it has been many years since the last earthquake, should residents be worried?
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Abird flies by moving its wings up and down. which two systems are most directly responsible for the movement of a bird's wings? a. skeletal and muscular systems b. respiratory and muscular systems c. skeletal and digestive systems d. respiratory and digestive systems
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Each nephron is made up of capillaries that form the __ sweat glands bladder glomerulus ureter
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Which of the following statements best distinguishes a hypothesis from a theory? a. theories are hypotheses that have been proved. b.hypotheses are guesses; theories are correct answers c. hypotheses usually are relatively narrow in scope; theories have broad explanatory power. d. theories are proved to be true; hypotheses are often contradicted by experimental results.
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In an earthquake-prone area, it has been many years since the last earthquake, should residents be w...
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