The cilia on this parecium are ised to propel the protozoan and also to a) move food particles into the cell. b) fight off predators c) attach during sexual reproduction d) perform binary fission.

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.