Taxonomy is defined as the science of

grouping organisms according to their characteristics

comparing dna to see evolutionary relationships

studying evolutionary relationships among organisms

using evolutionary history to classify organisms

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.

a chain link fence because there so tiny even my albino donkey can't get out