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Biology, 22.06.2019 11:30
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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Which individual below would be considered heterozygous? a.dd b.dd c.dd
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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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Biology, 22.06.2019 18:00
Which three statements represent the benefits of performing experiments using computer simulations?
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The duodenal ampulla receives secretions from the...
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