Why do dolphins leap from the water?

Dolphins originally leap out of the water to avoid predators like sharks. Dolphins also leap out of the water for navigation and to see where they are above the water. They also jump to get air since they are only mammals. Also for the entertainment of the public and also for occasional reasons... Hope I helped ^-^

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b. read the phase at the intersection of any given temperature and pressure.

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.