Which of the following is NOT an obstacle to stopping global climate change

options?

Explanation:

you need to give the options for an answer

the supermassive black hole is in the middle of the galaxy.

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.