Name: 孩子們的土壤層數 | #aumsum (Layers of Soil for Kids | #aumsum)
Uploaded: 2021-01-14T08:10:42.000Z
Duration: 6 min 15 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。

This layer consists of decomposed leaves, organic matter and humus, which makes the soil fertile.

It is a soft porous layer and is very rich in humus and nutrients.

It is a shelter for living organisms like worms and rodents.

Roots of bigger plants extend till this layer.

Hi, we are slightly weathered parent rocks.

This vertical section through which the different layers of the soil are visible is called soil profile.

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孩子們的土壤層數 | #aumsum (Layers of Soil for Kids | #aumsum)

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