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Biology, 21.06.2019 12:30, tamya12234
How does oxygen move from the respiratory system to the circulatory system? a. by pumping through the heart b. by circulating in an artery c. by moving across a synapse d. by diffusion across a capillary wall
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Aristotle classified animals according to their a. habitat and mating behavior c. mating behavior and relatedness b. habitat and physical differences d. physical differences and mating behavior
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Which is an example of commensalism in the tropical rainforest?
a. insects lay eggs in...
a. insects lay eggs in...
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