The use of dna as evidence in criminal investigations became possible because of the?

The very different characteristics of each type of DNA for each person. Each person has a distinctive set of finger prints saliva and other bodily fluids that is uncommon for anyone else to have the exact same. Hope this helps :)

wait any answer choices plz

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.