Why does an onion bulb shrivel after the green leaves have sprouted? Just need your help as fast as you can

Plants produce many leaves but no bulbs/ Plants are stunted/ worms boring into roots/  Leaves turn silvery and white streaked or blotchy/ leaves may become distorted/ Leaves die back from tips; root turn pink to red to yellow; yields is reduced.

Explanation:

a time line cause it goes from 685 to 978

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.