What breathes by pulling air into the lungs?
humans animals bears sponges mammals bacteria goats oxygen
A B C D E F G H
When the diaphragm moves down, air is pulled into the lungs.
mammals breathe by pulling air into the lungs
What breathes by pulling air into the lungs? (A) humans (B) animals (C) bears (D) sponges (E) mammals (F) bacteria (G) goats (H) oxygen