Need

which of the following is not a function of the human nervous system?

a) regulating heartbeat

b) moving oxygen from air into the blood

c) signaling the diaphragm to contract

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

Which of these conditions most likely produces an unstable isotope?

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.