Which organ of our body works the most?​

What is used to keep track of the gamates and possible offsprings combination

Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt

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.