Which food safety authorities perform these given duties ?

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

Cells destroy body cells infected by a virus or bacteria.

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.