Look at the diagram. Which structure holds the original code from the DNA gene?

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.

the tricuspid valve is present between right atrium and right ventricle

a lot of people sadly don't know the best way to learn is cheating off of your friends or this amazing thing called google

im not intirely sure but i think the anwser is d relative humidity