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-Cenozoic Time period is the longest A) False B) True 22- Process in which something is worn down by rubbing one object or surface against another A) Weathering B) Erosion C) Deposition D) Abrasion

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B) True. The Cenozoic Era is the most recent geologic era and is characterized by the dominance of mammals and the diversification of life. It began about 66 million years ago and continues to the present day, making it the longest time period in Earth's history.

22) D) Abrasion. Abrasion is the process in which something is worn down by rubbing one object or surface against another. It typically involves the physical wearing away of materials through friction. Weathering (option A) refers to the breakdown of rocks and minerals at or near the Earth's surface, while erosion (option B) is the movement and transport of weathered materials by various agents like water, wind, or ice. Deposition (option C) refers to the settling or deposition of eroded materials.

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