Higher energy contained in the sugar molecules produced by photosynthesis comes from A. light
B. water molecules.
C. ΑΤΡ.
D. carbon dioxide molecules.

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.