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Wastes containing NITROGEN are produced as a result of the breakdown of within liver cells of a mammal
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Which of these is not a function of some membrane proteins ? a.allowing polar molecules to enter the cell b.recognizing other types of cells c.receiving messeges from other cells b.carrying messages to oher cells
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Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?
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Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled
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Wastes containing NITROGEN are produced as a result of the breakdown of within liver cells of a mam...
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