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Soil by Mind Map: Soil

1. soil is made of...

1.1. Organic Matter

1.1.1. breaks down into nutrients The three types of nutrients are nitrogen, phosphorus, potassium

1.2. withered rocks

1.2.1. sand silt clay

2. descriptions

2.1. soil it the substance we use to grow plants

3. types of soil

3.1. forest

3.2. tropical grasland

3.3. desert

3.4. grass land

4. layers

4.1. there are four layers of soil

4.1.1. topsoil

4.1.2. subsoil

4.1.3. Withered rock

4.1.4. solid rock