Soil, Silt, and Sand: Layers of the Underground

1-3 ┊ 791 words ┊ ◄))
Soil, Silt, and Sand: Layers of the Underground








1-3, 791 words, 7 minutes audio time.

There’s more than just dirt below! Readers will learn about the layers and types of soil underground. Rocks, clay, sand, silt and all nonliving things underground are explored. Earth’s core, mantle, and crust are also discussed.  Readers will also discover why we could not live without dirt, and why we need to protect it.

READ

Lib-html地球与宇宙季节与天气生命科学/植物

Apples

2018-8-13 16:57:06

Lib-html地球与宇宙生命科学/植物

Roots, Bulbs, and Bacteria: Growths of the Underground

2018-8-13 16:57:03