List at least three body structures that are found in both chickens and dinosaurs that show they are related.

That's not all: chickens are close relations of dinosaurs, and genetic patterns in the brains of birds that learn new calls show remarkable similarities to humans. These findings stem from a project that sequenced genes from 48 bird species and then used several months of supercomputing time to analyze relationships.

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.