What is a molecule? a. a group of positive ions surrounded by delocalized electrons b. a group of ionically bonded atoms c. two oppositely charged ions d. a group of covalently bonded atoms

Which lists the organs in the correct order as food passes from the mouth to anus?

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?

What is the major limitation to the light microscope?