Provide a written comparison of the salmons' physical features, habitats, and ranges. Be sure to
list characteristics that could be used to distinguish among them. Write your comparisons in your
journal. You should include digital images of the salmon in your journal.

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.