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6. List four limitations of conducting toxicity testing in order to determine the safe exposure level for humans. In other words, none of our existing methods are perfect
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Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?
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According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes
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Prior knowledge can be gained from personal experience and a) forming well-developed hypotheses. b) listening to opinions of other people on a topic. c) researching previous experiments and results on a topic. eliminate d) no other methods. it can only be gained by personal experience.
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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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6. List four limitations of conducting toxicity testing in order to determine the safe exposure leve...
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