Why is weathering slow in cold dry places

Water is a major contribution to weathering. In a dry place, there will be not as much water to erode away small pieces of rocks, rust certain objects, or seep into the cracks of rocks to freeze and expand. Also, molecules in the air move much slower when the temperature is cold compared to when it is warm.

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.

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