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Biology, 21.06.2019 16:00
Which of the following is a main difference in cell structure between an onion cell and a human cheek cell? a. an onion cell contains one nucleus, whereas a human cheek cell contains two nuclei. b. an onion cell has a cell wall. c. a human cheek cell contains chloroplasts. d. there is no difference between an onion cell and a human cheek cell. you for your.
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During convection, less dense fluid rises and denser fluid sinks.
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Biology, 22.06.2019 10:30
Natural selection changes allele frequencies because some survive and reproduce more successfully than others.
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Biology, 22.06.2019 13:30
Which of these correctly describes the difference between processes that take place in prokaryotic and eukaryotic cells?
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Visible light a)is not part of the electromagnetic spectrum b)has more energy than radio waves c)ha...
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