Who contributed to the cell theory by publishing the idea that new cells can be produced only from the division of existing cells?

answer: mannn ion even know fam

explanation: just try asking yoo teacher yo parents or just simply another sight

4

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.