Soil Composition Brought to you by the Cogix Crossword Wizard

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ACROSS DOWN
2 Horizontal stratum of soil 1 Very fertile, dark soils of the temperate grassland biome that have a deep A horizon and are prime for agriculture
3 How easy it is to cultivate given soil 2 You find this heavily decomposed detritus at the bottom of the O Horizon
4 Relative proportions of sand, silt or clay in soil 4 Made of particles from 0.002mm to 0.02mm in size
7 Soil that has received leached minerals from above and is usually clay-heavy 5 A rich mixture of humus and mineral soils
8 Desert and dryland soils with poorly developed horizons; can be used for ranching but irrigation tends to salt them 6 The process of soil leaching by downward water flow
11 Poor agricultural soils of the rain forests that have little O horizon and a layer of iron and aluminum oxides in the B horizon 9 Topmost layer of the soil; contains a lot of plant detritus
12 Made of particles from 0.002mm smaller 10 Common and somewhat weathered forest soils with well developed horizons that are good for farming with fertilizer aid
15 5th layer of soil, containing the parent material from which the soil formed 13 4th layer of soil, where the subsoil is found
16 Made of particles from 0.02mm to 2.0mm in size 14 2nd layer of soil; contains the topsoil and fine plant roots
17 Vertical cutaway look at soil horizons 18 Soil that is 40% sand, 40% silt, 20% clay
19 3rd layer of soil, where soil is leached by water


Reference

Nebel, Bernard J. and Wright, Richard T. Environmental Science: The Way The World Works. 7th ed. 2000: Prentice Hall, New Jersey.

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