weathering - the mechanical and chemical processes that change objects on Earth's surface over time, mechanical weathering - when physical processes naturally break rocks into smaller pieces, chemical weathering - changes the materials that are part of a rock into new materials, oxidation - combines the element oxygen with other elements or molecules, soil - a mixture of weathered rock, rock fragments, decayed organic matter, water, and air, organic matter - the remains of something that was once alive, pores - small holes and spaces, decomposition - process of changing once-living material into dark-colored organic matter, parent material - the starting material of soil, climate - the average weather of an area, topography - the shape and steepness of the landscape, biota - all of the organisms that live in a region, horizons - layers of soil formed from the movement of the products of weathering,

Ch 5 Vocabulary (ESS)

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