16. Is the following sentence true or false? All distant galaxies are
moving away from ours because our galaxy is at the center of the
universe. -

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

answer; i believe the correct answer is (replication is not conservative);

trachea, alveoli, lung capillaries, arteries