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Biology, 22.06.2019 00:00
Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.
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Biology, 22.06.2019 10:30
All ova contain sex chromosomes corresponding to: x y xx xy
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Biology, 22.06.2019 15:00
When fossil fuels are burned, carbon dioxide is released. how does this gas impact the environment?
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Describe one issue affecting society that scientists will be able to address using the sequence of t...
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