Week 2 of conservation

 This week we talked about soil. Soil is the crust of the earth layers. Soil is made from minerals and contains gases and liquids. organic soil contains the most minerals.Topsoil or surface soil contains the most nutrients because there is a lot of organic matter such as animal manure. The layer under the topsoil is the subsoil ,this layer contains clay and minerals. The Substratum layer is a mixture between soil and rock. Then the last layer is bedrock this layer contains lots of big rock and there isn’t any minerals in this layer.

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