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Blood stem cells may develop into any kind of human blood cells. what kind of stem cells are blood stem cells? a. multipotent stem cells o b. totipotent stem cells o c. pluripotent stem cells o d. unipotent stem cells
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Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%
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Write a paragraph explaining how energy flows through an ecosystem using the following terms: energy pyramid, trophic level, producer, primary consumer, decomposer, sun, secondary consumer, and tertiary consumer. .
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When a person is frightened, epinephrine and norepinephrine are released into the bloodstream from t...
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