Unformatted text preview: requirements of plant. Soil Components The origin of any soil is the parent rock, of whatever type, which is "weathered" to tiny particles by mechanical and chemical processes (mostly involving water). The mineral component of soil is determined by the parent rock of that area. Living organisms affect the formation of soil from parent rock, as well. Lichens, mosses and fungi are especially important in soil formation. Any soil "community" includes: • Mineral particulates • Living organisms • Air and water spaces (30 - 60% of soil volume) • Humus (decayed and decaying organic material) component...
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- Fall '09
- Plants, 60%, parent rock, · Reservoir