3. Taxonomy is the science of -classification of all organisms, both living and extinct

-preserving animals

-cultivating green and blooming plants

-diagnosing plant diseases

What is thought to have caused the mass extinction at the end of the cretaceous period?

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

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.