Which of the following statements is true? moraines form when glaciers pick up large rocks. plucking happens when glaciers deposit rock and sediment. since 1979, the polar ice caps have grown in size about 20%. older glaciers have longer ice crystals than younger ones.

Moraines form when glaciers pick up large rocks.

Moraines are accumulations of stones, large rocks and sediments carried and transferred by a retreating glacier. A moraine is deposited as a ridge formed at the direction parallel to the ice movement.

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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.