If there are 20,000 Kcals available at the first trophic level, how many Kcals are available when we arrive at the Level 4? Level 5? Write the amount of energy available at levels 4 and 5.

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.