Which descriptions apply to isomers? check all that apply.

same molecular formula

different molecular formula

same structural formula

different structural formula

only hydrocarbons

same number of each kind of atom

same geometric arrangement of atoms

climate change and pollution

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.