Weathering Crossword Puzzle

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QUESTIONS LIST: ice wedging : causes cracks in rocks to expand as water seeps in and freezes, abrasion : breaking down of rock and wearing away of rock by the action of other rock, weathering : process by which rock is broken down in smaller pieces, rust : red color of rock and soil caused my acid rain, animal action : weathering caused by holes being dug to expose underlying rock, oxidation : causes rust to from with iron in rock, stalactites : caused by seeping ground water into caves, plant growth : happens when a small seed grows over time to split a rock, physical : type of weathering caused by temperature change, pressure change, water, wind, lichens : produces acids and grows on rocks and trees