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Weathering and erosion are slow changes that transform Earth's surface. This reading explans the two main types of weathering, mechanical and chemical. Students also learn about the causes of each type of weathering. Designed to introduce the topic as an in-class reading or reinforce concepts as homework. Middle- or early high school concept level, Grade 7/8 reading level. Three pages, with five short-response questions to check reading comprehensin and reinforce key concepts.