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  • 22-05-2018
  • Biology
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Topsoil is the horizon in Figure 7-1.

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  • 27-05-2018
Topsoil is the A horizon in figure 7-1.The most leaching of minerals occurs from the A horizon into the B horizon. The C horizon shown in figure 7-1 is most like the parent soil, and  the A horizon in figure 7-1 contains the most humus.
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