Cancer is marked by uncontrolled cell growth and division. which factor in excessive amounts contributes to this development? signal molecules binary fission uncontrolled meiosis radiation therapy

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.