WILL MARK BRAINLIEST! PUT A PIC OF YOU IN THE ANSWERS IF YOU ARE OLDER THAN 10 YEARS OLD.

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b

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.