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 |