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Is acid rain causing a decline of frog populations
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Biology, 22.06.2019 01:30
How do you date a sample of rock that you suspect as being one of the earliest on earth
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Biology, 22.06.2019 03:30
What is the most appropriate method of gaining weight (muscle mass)
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Biology, 22.06.2019 10:00
Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?
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Biology, 22.06.2019 10:00
The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a.an ionic bond is formed between the oxygen and carbon atoms. b.four valence electrons are shared. c.two valence electrons are shared. d.valence electrons are shared between oxygen atoms.
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Is acid rain causing a decline of frog populations...
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