Organic Material, The remains of dead plants and animals and their waste., Nutrients, Important to soil because they help plants grow., Erosion, Can carry soil away from hillsides during heavy rain., Bedrock, The lowest layer of soil is made of rocks., Loose Soil, This soil falls apart easily in your hand., Friable Soil, This soil is soft and easy to break with your fingers., Firm Soil, This soil is hard to break with fingers but possible., Very Firm Soil, This soil is so hard, you need a tool to break it., Sandy Soil, This type of soil is often found on beaches?, Clay Soil, This type of soil feels sticky when it is we, Silty Soil, It holds water well and is very good for growing plants., Natural Changes, Shifts in the soil caused entirely by nature and weather, such as heavy rain, strong winds, or a flood., Human Changes, Shifts in the soil caused directly by human activities, such as building a new highway or cutting down trees for crops.

Soil (Concepts)

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