What type of molecule is represented by the model below? a molecule made up of four carbon rings with other atoms bonded to those rings. fat carbohydrate steroid protein

9. the history of life on earth is recorded in

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.

How do the evolutionary chart and the video support the claim that all living things are made up of cells?