As human travel increase, the number of introduced species likely

Differentiation of cells changes the nucleic information. true false

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.

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.