What is one way to keep track of valence electrons in an ionic compound

a. electron dot structure

b. electrolyte structure

c. lattice energy graph

d. covalent dot diagram

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi

Which is an important function of normal flora? a. aid with bone marrow production. b. crowd out pathogenic bacteria. c. destroy digestive track pathogens. d. manufacture iron in the bloodstream.

Based on the diagram, which of the following best describes ways in which the physical appearance of h. neandertalensis and h. sapiens differ?