Which system does a human have, but not a flatworm?
A. a digestive system
B. a reproduc...
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Which property is used to identify the origin of an igneous rock? color density hardness crystal size
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What is the sequence of amino acids corresponds with the rna strand ucg ggg cac
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Biology, 21.06.2019 23:00
Which image shows labeled organelles that are present only in plant cells?
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Biology, 22.06.2019 10:50
What is it called when part of a cell membrane closes around a molecule to allow the molecule to enter the cell? a. passive transport b.diffusion c. endocytosis d. exocytosisc. endocytosis
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