What do these volcanoes indicate about plate tectonics in the region? The volcanoes form an island arc, indicating a converging plate boundary. The volcanoes form a line, indicating a diverging plate boundary. Two plates are moving past each other, causing faulting and magma formation. Two plates are moving apart, creating new seafloor.

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.

i am sorry but i need more information and a picture.