How could a hypothesis become a theory

A scientific hypothesis can become a theory if the hypothesis is tested extensively and competing hypotheses are eliminated.

Explanation:

So yeah if you have a lot of evidence and it is tested mutiple times it consider a theory.

maritime tropical may be your answer.

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.