GGR205H1 Study Guide - Final Guide: Plants And Animals, Soil Management, Regolith
12 Dec 2017
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Purifies: recycler of raw materials, converting the mineral nutrients in the wastes to forms (humus) usable by plants and animals -> return. A (topsoil) -> dominated by mineral particles, and dark in color. E -> intensely weathered and leached with little organic matter. B (subsoil) -> accumulated materials like clay/iron/calcium carbonate. C -> least weathered part, plant roots reach here. Clay, silt and sand: how does soil organic matter affect soil texture, organic matter binds together minerals into a granular soil structure. Increases water holding capabilities: define an essential element . The conceptual zone within the ecosystem consisting of soil bodies or directly influenced by them. A zone or sphere of activity in which mineral, water, air, and biological components come together to form soils: rocks lithosphere, air atmosphere, water hydrosphere, living things - biosphere. Till, loess, outwash, lacustrine, marine, colluvium, eolian, residual, alluvium.
