Ahuman somatic cell has chromosomes; eggs and sperm each have chromosomes. a) 46; 46 b) 23; 46 c) 46; 23 d) 23; 23

Apart of an ecosystem that can restrict the growth of a population is referred to as

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.