How do igneous rocks form? btw its not multiple choice

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.

What is the one part of the nucleotide  that differs among the other different nucle  tides?

What process creates gametes? a.fertilization b.mitosis c.meiosis