Escherichia coli is classified as: a.)an archaea. b.)a eukaryote. c.)a bacterium. d.)a virus.

E. coli is C.) a bacterium that normally typically resides in a warm blooded creatures intestines or in the environment and food.

energy and particles

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.