Biology, 16.12.2020 22:30 VanssaNedina20
In what period did continents emerge from the shallow seas? Paleozoic period or Cambrian period
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Biology, 22.06.2019 03:30
Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?
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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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Biology, 22.06.2019 19:10
which is an effect of short-term environmental changes? a) adaptation b) speciation c) extinction d) death (5 points)
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In what period did continents emerge from the shallow seas? Paleozoic period or Cambrian period...
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