Choose Griffith, Avery, or Hershey and Chase. Select evidence from the text to develop a flowchart that shows how that scientist or team of scientists used scientific methods. Be sure to identify each method. Use content from Chapter 1 as a guide.

the fossil record provides evidence of a common ancestor to many species.

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.