Part of an identification key for marine animal is shown . Which statement can be used to describe some characteristics of narwhal 

How is transcription similar to translation in terms of base pairing?

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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.