★ Key Takeaways
Horizon a or Topsoil This Layer Consists of Decomposed Material and Organic Matter. This Is the Reason, the Topsoil Has a Dark Brown Color. the Hummus Makes the Topsoil Soft, Porous to Hold Enough Air and Water. in This Layer, the Seeds Germinate and Roots of the Plants Grow.
What is the story behind How Is the Top Layer of Soil Formed? Read our comprehensive breakdown in this feature article.
Horizon a or Topsoil This Layer Consists of Decomposed Material and Organic Matter. This Is the Reason, the Topsoil Has a Dark Brown Color. the Hummus Makes the Topsoil Soft, Porous to Hold Enough Air and Water. in This Layer, the Seeds Germinate and Roots of the Plants Grow.
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